31140665507 has 32 divisors (see below), whose sum is σ = 38149730304. Its totient is φ = 24855206400.

The previous prime is 31140665449. The next prime is 31140665509. The reversal of 31140665507 is 70556604113.

It is a cyclic number.

It is not a de Polignac number, because 31140665507 - 2⁶ = 31140665443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31140665509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 625508 + ... + 673454.

It is an arithmetic number, because the mean of its divisors is an integer number (1192179072).

Almost surely, 2^31140665507 is an apocalyptic number.

31140665507 is a deficient number, since it is larger than the sum of its proper divisors (7009064797).

31140665507 is a wasteful number, since it uses less digits than its factorization.

31140665507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48099.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 31140665507 in words is "thirty-one billion, one hundred forty million, six hundred sixty-five thousand, five hundred seven".