3115971887 has 12 divisors (see below), whose sum is σ = 3649037400. Its totient is φ = 2652901776.

The previous prime is 3115971883. The next prime is 3115971893. The reversal of 3115971887 is 7881795113.

It is not a de Polignac number, because 3115971887 - 2² = 3115971883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3115971883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206093 + ... + 220694.

It is an arithmetic number, because the mean of its divisors is an integer number (304086450).

Almost surely, 2^3115971887 is an apocalyptic number.

3115971887 is a deficient number, since it is larger than the sum of its proper divisors (533065513).

3115971887 is a wasteful number, since it uses less digits than its factorization.

3115971887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426950 (or 426943 counting only the distinct ones).

The product of its digits is 423360, while the sum is 50.

The square root of 3115971887 is about 55820.8911340548. The cubic root of 3115971887 is about 1460.5995984385.

The spelling of 3115971887 in words is "three billion, one hundred fifteen million, nine hundred seventy-one thousand, eight hundred eighty-seven".