3115881 has 16 divisors (see below), whose sum is σ = 4742400. Its totient is φ = 2020464.

The previous prime is 3115873. The next prime is 3115883. The reversal of 3115881 is 1885113.

It is not a de Polignac number, because 3115881 - 2³ = 3115873 is a prime.

It is a super-2 number, since 2×3115881² = 19417428812322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (3115883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 561 + ... + 2558.

It is an arithmetic number, because the mean of its divisors is an integer number (296400).

Almost surely, 2^3115881 is an apocalyptic number.

It is an amenable number.

3115881 is a deficient number, since it is larger than the sum of its proper divisors (1626519).

3115881 is a wasteful number, since it uses less digits than its factorization.

3115881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3165 (or 3159 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 3115881 is about 1765.1858259118. The cubic root of 3115881 is about 146.0585397325.

The spelling of 3115881 in words is "three million, one hundred fifteen thousand, eight hundred eighty-one".