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31003412132 = 22711100660429
BaseRepresentation
bin11100110111111100…
…101000011010100100
32222000200101112001102
4130313330220122210
51001443333142012
622124234415232
72145202440440
oct346774503244
988020345042
1031003412132
111216a688460
126012b91518
132c012283a4
141701803820
15c16c812c2
hex737f286a4

31003412132 has 24 divisors (see below), whose sum is σ = 67643808960. Its totient is φ = 12079251360.

The previous prime is 31003412131. The next prime is 31003412161. The reversal of 31003412132 is 23121430013.

It is a super-2 number, since 2×310034121322 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31003412131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50329907 + ... + 50330522.

It is an arithmetic number, because the mean of its divisors is an integer number (2818492040).

Almost surely, 231003412132 is an apocalyptic number.

It is an amenable number.

31003412132 is an abundant number, since it is smaller than the sum of its proper divisors (36640396828).

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

31003412132 is a wasteful number, since it uses less digits than its factorization.

31003412132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100660451 (or 100660449 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31003412132 its reverse (23121430013), we get a palindrome (54124842145).

The spelling of 31003412132 in words is "thirty-one billion, three million, four hundred twelve thousand, one hundred thirty-two".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 100660429 201320858 402641716 704623003 1107264719 1409246006 2214529438 2818492012 4429058876 7750853033 15501706066 31003412132