90822031 has 4 divisors (see below), whose sum is σ = 90845064. Its totient is φ = 90799000.

The previous prime is 90821989. The next prime is 90822047. The reversal of 90822031 is 13022809.

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 90822031 - 2⁷ = 90821903 is a prime.

It is a super-2 number, since 2×90822031² = 16497282629929922, 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 = 90821987 and 90822005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90852031) 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, 3940 + ... + 14041.

It is an arithmetic number, because the mean of its divisors is an integer number (22711266).

Almost surely, 2^90822031 is an apocalyptic number.

90822031 is a deficient number, since it is larger than the sum of its proper divisors (23033).

90822031 is a wasteful number, since it uses less digits than its factorization.

90822031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23032.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 90822031 is about 9530.0593387450. The cubic root of 90822031 is about 449.5007318712.

The spelling of 90822031 in words is "ninety million, eight hundred twenty-two thousand, thirty-one".