868182131 has 2 divisors, whose sum is σ = 868182132. Its totient is φ = 868182130.

The previous prime is 868182071. The next prime is 868182149. The reversal of 868182131 is 131281868.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868182131 is a prime.

It is a super-2 number, since 2×868182131² = 1507480425175402322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (868182151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434091065 + 434091066.

It is an arithmetic number, because the mean of its divisors is an integer number (434091066).

Almost surely, 2^868182131 is an apocalyptic number.

868182131 is a deficient number, since it is larger than the sum of its proper divisors (1).

868182131 is an equidigital number, since it uses as much as digits as its factorization.

868182131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 38.

The square root of 868182131 is about 29464.9305276629. The cubic root of 868182131 is about 953.9748988762.

The spelling of 868182131 in words is "eight hundred sixty-eight million, one hundred eighty-two thousand, one hundred thirty-one".