91313965 has 32 divisors (see below), whose sum is σ = 117210240. Its totient is φ = 68200704.

The previous prime is 91313947. The next prime is 91313977. The reversal of 91313965 is 56931319.

It is a cyclic number.

It is not a de Polignac number, because 91313965 - 2¹¹ = 91311917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 656866 + ... + 657004.

It is an arithmetic number, because the mean of its divisors is an integer number (3662820).

Almost surely, 2^91313965 is an apocalyptic number.

It is an amenable number.

91313965 is a deficient number, since it is larger than the sum of its proper divisors (25896275).

91313965 is a wasteful number, since it uses less digits than its factorization.

91313965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301.

The product of its digits is 21870, while the sum is 37.

The square root of 91313965 is about 9555.8340818581. The cubic root of 91313965 is about 450.3108387358.

It can be divided in two parts, 9131396 and 5, that added together give a triangular number (9131401 = T₄₂₇₃).

The spelling of 91313965 in words is "ninety-one million, three hundred thirteen thousand, nine hundred sixty-five".