91232133 has 8 divisors (see below), whose sum is σ = 123938208. Its totient is φ = 59673744.

The previous prime is 91232107. The next prime is 91232137. The reversal of 91232133 is 33123219.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91232133 - 2¹⁷ = 91101061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91232137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286735 + ... + 287052.

It is an arithmetic number, because the mean of its divisors is an integer number (15492276).

Almost surely, 2^91232133 is an apocalyptic number.

It is an amenable number.

91232133 is a deficient number, since it is larger than the sum of its proper divisors (32706075).

91232133 is a wasteful number, since it uses less digits than its factorization.

91232133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573843.

The product of its digits is 972, while the sum is 24.

The square root of 91232133 is about 9551.5513399657. The cubic root of 91232133 is about 450.1762815523.

The spelling of 91232133 in words is "ninety-one million, two hundred thirty-two thousand, one hundred thirty-three".