22690831 has 4 divisors (see below), whose sum is σ = 22700664. Its totient is φ = 22681000.

The previous prime is 22690813. The next prime is 22690861. The reversal of 22690831 is 13809622.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22690831 - 2¹⁵ = 22658063 is a prime.

It is a super-2 number, since 2×22690831² = 1029747622941122, 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 = 22690793 and 22690802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22690861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636 + ... + 6766.

It is an arithmetic number, because the mean of its divisors is an integer number (5675166).

Almost surely, 2^22690831 is an apocalyptic number.

22690831 is a deficient number, since it is larger than the sum of its proper divisors (9833).

22690831 is an equidigital number, since it uses as much as digits as its factorization.

22690831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9832.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 22690831 is about 4763.4893722984. The cubic root of 22690831 is about 283.1066910339.

The spelling of 22690831 in words is "twenty-two million, six hundred ninety thousand, eight hundred thirty-one".