90500331 has 8 divisors (see below), whose sum is σ = 125913600. Its totient is φ = 57710312.

The previous prime is 90500303. The next prime is 90500341. The reversal of 90500331 is 13300509.

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

It is not a de Polignac number, because 90500331 - 2¹⁵ = 90467563 is a prime.

It is a super-2 number, since 2×90500331² = 16380619822219122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90500298 and 90500307.

It is not an unprimeable number, because it can be changed into a prime (90500341) 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, 655731 + ... + 655868.

It is an arithmetic number, because the mean of its divisors is an integer number (15739200).

Almost surely, 2^90500331 is an apocalyptic number.

90500331 is a deficient number, since it is larger than the sum of its proper divisors (35413269).

90500331 is a wasteful number, since it uses less digits than its factorization.

90500331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311625.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 90500331 is about 9513.1661921781. The cubic root of 90500331 is about 448.9693796775.

The spelling of 90500331 in words is "ninety million, five hundred thousand, three hundred thirty-one".