31154279312 has 60 divisors (see below), whose sum is σ = 67470395904. Its totient is φ = 13915025280.

The previous prime is 31154279279. The next prime is 31154279371. The reversal of 31154279312 is 21397245113.

It is a super-2 number, since 2×31154279312² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102008 + ... + 269655.

Almost surely, 2^31154279312 is an apocalyptic number.

It is an amenable number.

31154279312 is an abundant number, since it is smaller than the sum of its proper divisors (36316116592).

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

31154279312 is a wasteful number, since it uses less digits than its factorization.

31154279312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371728 (or 371709 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The spelling of 31154279312 in words is "thirty-one billion, one hundred fifty-four million, two hundred seventy-nine thousand, three hundred twelve".