90104231 has 8 divisors (see below), whose sum is σ = 103388544. Its totient is φ = 76923000.

The previous prime is 90104227. The next prime is 90104237. The reversal of 90104231 is 13240109.

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

It is not a de Polignac number, because 90104231 - 2² = 90104227 is a prime.

It is a super-2 number, since 2×90104231² = 16237544888202722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90104237) 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, 23885 + ... + 27398.

It is an arithmetic number, because the mean of its divisors is an integer number (12923568).

Almost surely, 2^90104231 is an apocalyptic number.

90104231 is a deficient number, since it is larger than the sum of its proper divisors (13284313).

90104231 is a wasteful number, since it uses less digits than its factorization.

90104231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51541.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 90104231 is about 9492.3248469487. The cubic root of 90104231 is about 448.3134083942.

The spelling of 90104231 in words is "ninety million, one hundred four thousand, two hundred thirty-one".