31879361252 has 12 divisors (see below), whose sum is σ = 57588523776. Its totient is φ = 15425497320.

The previous prime is 31879361249. The next prime is 31879361279. The reversal of 31879361252 is 25216397813.

It is a junction number, because it is equal to n+sod(n) for n = 31879361197 and 31879361206.

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 3 ways as a sum of consecutive naturals, for example, 128545688 + ... + 128545935.

It is an arithmetic number, because the mean of its divisors is an integer number (4799043648).

Almost surely, 2^31879361252 is an apocalyptic number.

It is an amenable number.

31879361252 is a deficient number, since it is larger than the sum of its proper divisors (25709162524).

31879361252 is a wasteful number, since it uses less digits than its factorization.

31879361252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257091658 (or 257091656 counting only the distinct ones).

The product of its digits is 544320, while the sum is 47.

The spelling of 31879361252 in words is "thirty-one billion, eight hundred seventy-nine million, three hundred sixty-one thousand, two hundred fifty-two".