90132331 has 4 divisors (see below), whose sum is σ = 94051152. Its totient is φ = 86213512.

The previous prime is 90132271. The next prime is 90132373. The reversal of 90132331 is 13323109.

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 90132331 - 2⁹ = 90131819 is a prime.

It is a super-2 number, since 2×90132331² = 16247674182987122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90132431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1959376 + ... + 1959421.

It is an arithmetic number, because the mean of its divisors is an integer number (23512788).

Almost surely, 2^90132331 is an apocalyptic number.

90132331 is a deficient number, since it is larger than the sum of its proper divisors (3918821).

90132331 is a wasteful number, since it uses less digits than its factorization.

90132331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3918820.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 90132331 is about 9493.8048747591. The cubic root of 90132331 is about 448.3600073804.

The spelling of 90132331 in words is "ninety million, one hundred thirty-two thousand, three hundred thirty-one".