91533200131 has 12 divisors (see below), whose sum is σ = 96711147192. Its totient is φ = 86619746304.

The previous prime is 91533200111. The next prime is 91533200141. The reversal of 91533200131 is 13100233519.

It is not a de Polignac number, because 91533200131 - 2¹⁷ = 91533069059 is a prime.

It is a super-2 number, since 2×91533200131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91533200131.

It is not an unprimeable number, because it can be changed into a prime (91533200111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187651 + ... + 467203.

It is an arithmetic number, because the mean of its divisors is an integer number (8059262266).

Almost surely, 2^91533200131 is an apocalyptic number.

91533200131 is a deficient number, since it is larger than the sum of its proper divisors (5177947061).

91533200131 is a wasteful number, since it uses less digits than its factorization.

91533200131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280498 (or 280479 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 28.

The spelling of 91533200131 in words is "ninety-one billion, five hundred thirty-three million, two hundred thousand, one hundred thirty-one".