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2031423420 = 22351312720507
BaseRepresentation
bin111100100010101…
…0000111110111100
312020120111000001110
41321011100332330
513130021022140
6533324242020
7101224546155
oct17105207674
95216430043
102031423420
1195275a534
124883a0310
13264b2a1c0
14153b1892c
15bd51d380
hex79150fbc

2031423420 has 96 divisors (see below), whose sum is σ = 6174056448. Its totient is φ = 496081152.

The previous prime is 2031423391. The next prime is 2031423439. The reversal of 2031423420 is 243241302.

It is a super-2 number, since 2×20314234202 = 8253362222648992800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88807 + ... + 109313.

It is an arithmetic number, because the mean of its divisors is an integer number (64313088).

Almost surely, 22031423420 is an apocalyptic number.

2031423420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2031423420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3087028224).

2031423420 is an abundant number, since it is smaller than the sum of its proper divisors (4142633028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2031423420 is a wasteful number, since it uses less digits than its factorization.

2031423420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20659 (or 20657 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2031423420 is about 45071.3148243980. The cubic root of 2031423420 is about 1266.4852952068.

Adding to 2031423420 its reverse (243241302), we get a palindrome (2274664722).

It can be divided in two parts, 20314 and 23420, that added together give a palindrome (43734).

The spelling of 2031423420 in words is "two billion, thirty-one million, four hundred twenty-three thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 127 130 156 195 254 260 381 390 508 635 762 780 1270 1524 1651 1905 2540 3302 3810 4953 6604 7620 8255 9906 16510 19812 20507 24765 33020 41014 49530 61521 82028 99060 102535 123042 205070 246084 266591 307605 410140 533182 615210 799773 1066364 1230420 1332955 1599546 2604389 2665910 3199092 3998865 5208778 5331820 7813167 7997730 10417556 13021945 15626334 15995460 26043890 31252668 33857057 39065835 52087780 67714114 78131670 101571171 135428228 156263340 169285285 203142342 338570570 406284684 507855855 677141140 1015711710 2031423420