2931880056 has 128 divisors (see below), whose sum is σ = 8701378560. Its totient is φ = 805564800.

The previous prime is 2931880031. The next prime is 2931880067. The reversal of 2931880056 is 6500881392.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 868051 + ... + 871421.

It is an arithmetic number, because the mean of its divisors is an integer number (67979520).

Almost surely, 2^2931880056 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 2931880056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4350689280).

2931880056 is an abundant number, since it is smaller than the sum of its proper divisors (5769498504).

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

2931880056 is a wasteful number, since it uses less digits than its factorization.

2931880056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585 (or 3581 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 2931880056 is about 54146.8379132152. The cubic root of 2931880056 is about 1431.2496706368.

The spelling of 2931880056 in words is "two billion, nine hundred thirty-one million, eight hundred eighty thousand, fifty-six".