31288653712 has 20 divisors (see below), whose sum is σ = 63812386480. Its totient is φ = 14820941088.

The previous prime is 31288653701. The next prime is 31288653713. The reversal of 31288653712 is 21735688213.

It is a super-2 number, since 2×31288653712² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31288653713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51461298 + ... + 51461905.

It is an arithmetic number, because the mean of its divisors is an integer number (3190619324).

Almost surely, 2^31288653712 is an apocalyptic number.

It is an amenable number.

31288653712 is an abundant number, since it is smaller than the sum of its proper divisors (32523732768).

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

31288653712 is a wasteful number, since it uses less digits than its factorization.

31288653712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102923230 (or 102923224 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The spelling of 31288653712 in words is "thirty-one billion, two hundred eighty-eight million, six hundred fifty-three thousand, seven hundred twelve".