31924715140 has 24 divisors (see below), whose sum is σ = 70985543832. Its totient is φ = 12018716160.

The previous prime is 31924715131. The next prime is 31924715161. The reversal of 31924715140 is 4151742913.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18367838784 + 13556876356 = 135528^2 + 116434^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31924715140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46947771 + ... + 46948450.

It is an arithmetic number, because the mean of its divisors is an integer number (2957730993).

Almost surely, 2^31924715140 is an apocalyptic number.

It is an amenable number.

31924715140 is an abundant number, since it is smaller than the sum of its proper divisors (39060828692).

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

31924715140 is a wasteful number, since it uses less digits than its factorization.

31924715140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93896247 (or 93896245 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 31924715140 in words is "thirty-one billion, nine hundred twenty-four million, seven hundred fifteen thousand, one hundred forty".