31007638312 has 16 divisors (see below), whose sum is σ = 66444939360. Its totient is φ = 13288987824.

The previous prime is 31007638267. The next prime is 31007638331. The reversal of 31007638312 is 21383670013.

It is a super-2 number, since 2×31007638312² (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 3 ways as a sum of consecutive naturals, for example, 276853858 + ... + 276853969.

It is an arithmetic number, because the mean of its divisors is an integer number (4152808710).

Almost surely, 2^31007638312 is an apocalyptic number.

It is an amenable number.

31007638312 is an abundant number, since it is smaller than the sum of its proper divisors (35437301048).

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

31007638312 is a wasteful number, since it uses less digits than its factorization.

31007638312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553707840 (or 553707836 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 31007638312 in words is "thirty-one billion, seven million, six hundred thirty-eight thousand, three hundred twelve".