2160931 has 2 divisors, whose sum is σ = 2160932. Its totient is φ = 2160930.

The previous prime is 2160923. The next prime is 2160937. The reversal of 2160931 is 1390612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2160931 - 2³ = 2160923 is a prime.

It is a super-2 number, since 2×2160931² = 9339245573522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2160937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080465 + 1080466.

It is an arithmetic number, because the mean of its divisors is an integer number (1080466).

2^2160931 is an apocalyptic number.

2160931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2160931 is an equidigital number, since it uses as much as digits as its factorization.

2160931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 2160931 is about 1470.0105441799. The cubic root of 2160931 is about 129.2846507592.

The spelling of 2160931 in words is "two million, one hundred sixty thousand, nine hundred thirty-one".