22233131 has 4 divisors (see below), whose sum is σ = 22244952. Its totient is φ = 22221312.

The previous prime is 22233121. The next prime is 22233139. The reversal of 22233131 is 13133222.

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 a de Polignac number, because none of the positive numbers 2^k-22233131 is a prime.

It is a super-2 number, since 2×22233131² = 988624228126322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22233139) 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, 2390 + ... + 7083.

It is an arithmetic number, because the mean of its divisors is an integer number (5561238).

Almost surely, 2^22233131 is an apocalyptic number.

22233131 is a deficient number, since it is larger than the sum of its proper divisors (11821).

22233131 is an equidigital number, since it uses as much as digits as its factorization.

22233131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11820.

The product of its digits is 216, while the sum is 17.

The square root of 22233131 is about 4715.2021165587. The cubic root of 22233131 is about 281.1902183392.

Adding to 22233131 its reverse (13133222), we get a palindrome (35366353).

Subtracting from 22233131 its reverse (13133222), we obtain a palindrome (9099909).

The spelling of 22233131 in words is "twenty-two million, two hundred thirty-three thousand, one hundred thirty-one".