31368476440 has 32 divisors (see below), whose sum is σ = 80661797280. Its totient is φ = 10754906112.

The previous prime is 31368476437. The next prime is 31368476453. The reversal of 31368476440 is 4467486313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56014857 + ... + 56015416.

It is an arithmetic number, because the mean of its divisors is an integer number (2520681165).

Almost surely, 2^31368476440 is an apocalyptic number.

It is an amenable number.

31368476440 is an abundant number, since it is smaller than the sum of its proper divisors (49293320840).

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

31368476440 is a wasteful number, since it uses less digits than its factorization.

31368476440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112030291 (or 112030287 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 31368476440 in words is "thirty-one billion, three hundred sixty-eight million, four hundred seventy-six thousand, four hundred forty".