231795931 has 2 divisors, whose sum is σ = 231795932. Its totient is φ = 231795930.

The previous prime is 231795923. The next prime is 231795973. The reversal of 231795931 is 139597132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231795931 - 2³ = 231795923 is a prime.

It is a super-2 number, since 2×231795931² = 107458707256313522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231795911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115897965 + 115897966.

It is an arithmetic number, because the mean of its divisors is an integer number (115897966).

Almost surely, 2^231795931 is an apocalyptic number.

231795931 is a deficient number, since it is larger than the sum of its proper divisors (1).

231795931 is an equidigital number, since it uses as much as digits as its factorization.

231795931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 40.

The square root of 231795931 is about 15224.8458448682. The cubic root of 231795931 is about 614.2831500395.

The spelling of 231795931 in words is "two hundred thirty-one million, seven hundred ninety-five thousand, nine hundred thirty-one".