91334931 has 16 divisors (see below), whose sum is σ = 129746304. Its totient is φ = 56951424.

The previous prime is 91334857. The next prime is 91334939. The reversal of 91334931 is 13943319.

It is a de Polignac number, because none of the positive numbers 2^k-91334931 is a prime.

It is a super-2 number, since 2×91334931² = 16684139241549522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91334892 and 91334901.

It is not an unprimeable number, because it can be changed into a prime (91334939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2820 + ... + 13806.

It is an arithmetic number, because the mean of its divisors is an integer number (8109144).

Almost surely, 2^91334931 is an apocalyptic number.

91334931 is a deficient number, since it is larger than the sum of its proper divisors (38411373).

91334931 is a wasteful number, since it uses less digits than its factorization.

91334931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11170.

The product of its digits is 8748, while the sum is 33.

The square root of 91334931 is about 9556.9310450583. The cubic root of 91334931 is about 450.3453004035.

The spelling of 91334931 in words is "ninety-one million, three hundred thirty-four thousand, nine hundred thirty-one".