31383602928 has 400 divisors, whose sum is σ = 96966650880. Its totient is φ = 9785318400.

The previous prime is 31383602927. The next prime is 31383602953. The reversal of 31383602928 is 82920638313.

31383602928 is a `hidden beast` number, since 3 + 1 + 38 + 3 + 602 + 9 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31383602927) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 239569423 + ... + 239569553.

Almost surely, 2^31383602928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31383602928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48483325440).

31383602928 is an abundant number, since it is smaller than the sum of its proper divisors (65583047952).

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

31383602928 is a wasteful number, since it uses less digits than its factorization.

31383602928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 31383602928 in words is "thirty-one billion, three hundred eighty-three million, six hundred two thousand, nine hundred twenty-eight".