91623314131 has 4 divisors (see below), whose sum is σ = 91657774600. Its totient is φ = 91588853664.

The previous prime is 91623314113. The next prime is 91623314197. The reversal of 91623314131 is 13141332619.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91623314131 - 2¹¹ = 91623312083 is a prime.

It is a super-2 number, since 2×91623314131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91623114131) 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 in 3 ways as a sum of consecutive naturals, for example, 17226246 + ... + 17231563.

It is an arithmetic number, because the mean of its divisors is an integer number (22914443650).

Almost surely, 2^91623314131 is an apocalyptic number.

91623314131 is a deficient number, since it is larger than the sum of its proper divisors (34460469).

91623314131 is a wasteful number, since it uses less digits than its factorization.

91623314131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34460468.

The product of its digits is 11664, while the sum is 34.

The spelling of 91623314131 in words is "ninety-one billion, six hundred twenty-three million, three hundred fourteen thousand, one hundred thirty-one".