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2031010142420 = 225725213977849
BaseRepresentation
bin11101100011100001101…
…000110101100011010100
321012011101120220022020102
4131203201220311203110
5231234002044024140
64153011055553232
7266510216236400
oct35434150654324
97164346808212
102031010142420
1171338a305866
1228975922b818
131196a5ca7c7c
1470431126100
1537c7063ce15
hex1d8e1a358d4

2031010142420 has 72 divisors (see below), whose sum is σ = 4970991853800. Its totient is φ = 695009602560.

The previous prime is 2031010142401. The next prime is 2031010142459. The reversal of 2031010142420 is 242410101302.

It can be written as a sum of positive squares in 4 ways, for example, as 5916071056 + 2025094071364 = 76916^2 + 1423058^2 .

It is a super-2 number, since 2×20310101424202 (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2031010142392 and 2031010142401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1478345 + ... + 2499504.

It is an arithmetic number, because the mean of its divisors is an integer number (69041553525).

Almost surely, 22031010142420 is an apocalyptic number.

2031010142420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031010142420 is an abundant number, since it is smaller than the sum of its proper divisors (2939981711380).

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

2031010142420 is a wasteful number, since it uses less digits than its factorization.

2031010142420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3978393 (or 3978384 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2031010142420 its reverse (242410101302), we get a palindrome (2273420243722).

The spelling of 2031010142420 in words is "two trillion, thirty-one billion, ten million, one hundred forty-two thousand, four hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 490 521 980 1042 2084 2605 3647 5210 7294 10420 14588 18235 25529 36470 51058 72940 102116 127645 255290 510580 3977849 7955698 15911396 19889245 27844943 39778490 55689886 79556980 111379772 139224715 194914601 278449430 389829202 556898860 779658404 974573005 1949146010 2072459329 3898292020 4144918658 8289837316 10362296645 14507215303 20724593290 29014430606 41449186580 58028861212 72536076515 101550507121 145072153030 203101014242 290144306060 406202028484 507752535605 1015505071210 2031010142420