91695031 has 2 divisors, whose sum is σ = 91695032. Its totient is φ = 91695030.

The previous prime is 91695001. The next prime is 91695091. The reversal of 91695031 is 13059619.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91695031 - 2¹⁹ = 91170743 is a prime.

It is a super-2 number, since 2×91695031² = 16815957420181922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91695001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45847515 + 45847516.

It is an arithmetic number, because the mean of its divisors is an integer number (45847516).

Almost surely, 2^91695031 is an apocalyptic number.

91695031 is a deficient number, since it is larger than the sum of its proper divisors (1).

91695031 is an equidigital number, since it uses as much as digits as its factorization.

91695031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 91695031 is about 9575.7522419912. The cubic root of 91695031 is about 450.9363728509.

The spelling of 91695031 in words is "ninety-one million, six hundred ninety-five thousand, thirty-one".