90204311 has 4 divisors (see below), whose sum is σ = 91550712. Its totient is φ = 88857912.

The previous prime is 90204307. The next prime is 90204337. The reversal of 90204311 is 11340209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11340209 = 523 ⋅21683.

It is a cyclic number.

It is not a de Polignac number, because 90204311 - 2² = 90204307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90204371) 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, 673100 + ... + 673233.

It is an arithmetic number, because the mean of its divisors is an integer number (22887678).

Almost surely, 2^90204311 is an apocalyptic number.

90204311 is a deficient number, since it is larger than the sum of its proper divisors (1346401).

90204311 is a wasteful number, since it uses less digits than its factorization.

90204311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346400.

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

The square root of 90204311 is about 9497.5950113700. The cubic root of 90204311 is about 448.4793295876.

It can be divided in two parts, 9020 and 4311, that added together give a palindrome (13331).

The spelling of 90204311 in words is "ninety million, two hundred four thousand, three hundred eleven".