91160131 has 2 divisors, whose sum is σ = 91160132. Its totient is φ = 91160130.

The previous prime is 91160117. The next prime is 91160161. The reversal of 91160131 is 13106119.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91160131 - 2⁵ = 91160099 is a prime.

It is a super-2 number, since 2×91160131² = 16620338967874322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91160161) 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, 45580065 + 45580066.

It is an arithmetic number, because the mean of its divisors is an integer number (45580066).

Almost surely, 2^91160131 is an apocalyptic number.

91160131 is a deficient number, since it is larger than the sum of its proper divisors (1).

91160131 is an equidigital number, since it uses as much as digits as its factorization.

91160131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 91160131 is about 9547.7814700589. The cubic root of 91160131 is about 450.0578213767.

The spelling of 91160131 in words is "ninety-one million, one hundred sixty thousand, one hundred thirty-one".