2131896585 has 32 divisors (see below), whose sum is σ = 4198199040. Its totient is φ = 899612928.

The previous prime is 2131896581. The next prime is 2131896631. The reversal of 2131896585 is 5856981312.

It is a happy number.

It is not a de Polignac number, because 2131896585 - 2² = 2131896581 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2131896581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 779550 + ... + 782279.

It is an arithmetic number, because the mean of its divisors is an integer number (131193720).

Almost surely, 2^2131896585 is an apocalyptic number.

It is an amenable number.

2131896585 is a deficient number, since it is larger than the sum of its proper divisors (2066302455).

2131896585 is a wasteful number, since it uses less digits than its factorization.

2131896585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561857.

The product of its digits is 518400, while the sum is 48.

The square root of 2131896585 is about 46172.4656586585. The cubic root of 2131896585 is about 1287.0301218100.

The spelling of 2131896585 in words is "two billion, one hundred thirty-one million, eight hundred ninety-six thousand, five hundred eighty-five".