91123132 has 6 divisors (see below), whose sum is σ = 159465488. Its totient is φ = 45561564.

The previous prime is 91123129. The next prime is 91123139. The reversal of 91123132 is 23132119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91123139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11390388 + ... + 11390395.

Almost surely, 2^91123132 is an apocalyptic number.

It is an amenable number.

91123132 is a deficient number, since it is larger than the sum of its proper divisors (68342356).

91123132 is a wasteful number, since it uses less digits than its factorization.

91123132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22780787 (or 22780785 counting only the distinct ones).

The product of its digits is 324, while the sum is 22.

The square root of 91123132 is about 9545.8437028898. The cubic root of 91123132 is about 449.9969250819.

The spelling of 91123132 in words is "ninety-one million, one hundred twenty-three thousand, one hundred thirty-two".