31031952648 has 32 divisors (see below), whose sum is σ = 77588115360. Its totient is φ = 10342886400.

The previous prime is 31031952647. The next prime is 31031952667. The reversal of 31031952648 is 84625913013.

It is not an unprimeable number, because it can be changed into a prime (31031952647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180723 + ... + 307773.

It is an arithmetic number, because the mean of its divisors is an integer number (2424628605).

Almost surely, 2^31031952648 is an apocalyptic number.

It is an amenable number.

31031952648 is an abundant number, since it is smaller than the sum of its proper divisors (46556162712).

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

31031952648 is a wasteful number, since it uses less digits than its factorization.

31031952648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137237 (or 137233 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 31031952648 in words is "thirty-one billion, thirty-one million, nine hundred fifty-two thousand, six hundred forty-eight".