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20000311230 = 2353121505711
BaseRepresentation
bin10010101000000111…
…001000011110111110
31220121212010002011210
4102220013020132332
5311430034424410
613104340025250
71305424561164
oct225007103676
956555102153
1020000311230
118533721939
123a62092226
131b697864b3
14d7a367234
157c0ccd220
hex4a81c87be

20000311230 has 32 divisors (see below), whose sum is σ = 49549160448. Its totient is φ = 5161370400.

The previous prime is 20000311223. The next prime is 20000311271. The reversal of 20000311230 is 3211300002.

It is a happy number.

It is a super-2 number, since 2×200003112302 (a number of 21 digits) 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 15 ways as a sum of consecutive naturals, for example, 10751926 + ... + 10753785.

It is an arithmetic number, because the mean of its divisors is an integer number (1548411264).

Almost surely, 220000311230 is an apocalyptic number.

20000311230 is an abundant number, since it is smaller than the sum of its proper divisors (29548849218).

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

20000311230 is a wasteful number, since it uses less digits than its factorization.

20000311230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21505752.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20000311230 its reverse (3211300002), we get a palindrome (23211611232).

The spelling of 20000311230 in words is "twenty billion, three hundred eleven thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 31 62 93 155 186 310 465 930 21505711 43011422 64517133 107528555 129034266 215057110 322585665 645171330 666677041 1333354082 2000031123 3333385205 4000062246 6666770410 10000155615 20000311230