931987056 has 480 divisors, whose sum is σ = 3505275648. Its totient is φ = 209018880.

The previous prime is 931987037. The next prime is 931987061. The reversal of 931987056 is 650789139.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 931986996 and 931987014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5717631 + ... + 5717793.

Almost surely, 2^931987056 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 931987056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1752637824).

931987056 is an abundant number, since it is smaller than the sum of its proper divisors (2573288592).

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

931987056 is a wasteful number, since it uses less digits than its factorization.

931987056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 931987056 is about 30528.4630468027. The cubic root of 931987056 is about 976.7946978632.

The spelling of 931987056 in words is "nine hundred thirty-one million, nine hundred eighty-seven thousand, fifty-six".