90953231 has 4 divisors (see below), whose sum is σ = 90972552. Its totient is φ = 90933912.

The previous prime is 90953221. The next prime is 90953263. The reversal of 90953231 is 13235909.

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 90953231 - 2⁶ = 90953167 is a prime.

It is a super-2 number, since 2×90953231² = 16544980458678722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90953221) 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, 2525 + ... + 13721.

It is an arithmetic number, because the mean of its divisors is an integer number (22743138).

Almost surely, 2^90953231 is an apocalyptic number.

90953231 is a deficient number, since it is larger than the sum of its proper divisors (19321).

90953231 is a wasteful number, since it uses less digits than its factorization.

90953231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19320.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 90953231 is about 9536.9403374458. The cubic root of 90953231 is about 449.7170748307.

The spelling of 90953231 in words is "ninety million, nine hundred fifty-three thousand, two hundred thirty-one".