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31152806907 = 313974706971
BaseRepresentation
bin11101000000110110…
…100001101111111011
32222102002111120011020
4131000312201233323
51002300104310112
622151132433523
72151665326635
oct350066415773
988362446136
1031152806907
1112236a46a12
1260550188a3
132c26174971
1417175b1a55
15c24e4148c
hex740da1bfb

31152806907 has 8 divisors (see below), whose sum is σ = 41835904320. Its totient is φ = 20619123720.

The previous prime is 31152806899. The next prime is 31152806911. The reversal of 31152806907 is 70960825113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31152806907 - 23 = 31152806899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31152806917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37353069 + ... + 37353902.

It is an arithmetic number, because the mean of its divisors is an integer number (5229488040).

Almost surely, 231152806907 is an apocalyptic number.

31152806907 is a deficient number, since it is larger than the sum of its proper divisors (10683097413).

31152806907 is a wasteful number, since it uses less digits than its factorization.

31152806907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74707113.

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 31152806907 in words is "thirty-one billion, one hundred fifty-two million, eight hundred six thousand, nine hundred seven".

Divisors: 1 3 139 417 74706971 224120913 10384268969 31152806907