90352831 has 4 divisors (see below), whose sum is σ = 90599392. Its totient is φ = 90106272.

The previous prime is 90352799. The next prime is 90352837. The reversal of 90352831 is 13825309.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13825309 = 37 ⋅373657.

It is a cyclic number.

It is not a de Polignac number, because 90352831 - 2⁵ = 90352799 is a prime.

It is a super-2 number, since 2×90352831² = 16327268139429122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90352793 and 90352802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90352837) 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, 122730 + ... + 123463.

It is an arithmetic number, because the mean of its divisors is an integer number (22649848).

Almost surely, 2^90352831 is an apocalyptic number.

90352831 is a deficient number, since it is larger than the sum of its proper divisors (246561).

90352831 is a wasteful number, since it uses less digits than its factorization.

90352831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246560.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 90352831 is about 9505.4106171170. The cubic root of 90352831 is about 448.7253327120.

The spelling of 90352831 in words is "ninety million, three hundred fifty-two thousand, eight hundred thirty-one".