22345931 has 2 divisors, whose sum is σ = 22345932. Its totient is φ = 22345930.

The previous prime is 22345879. The next prime is 22345937. The reversal of 22345931 is 13954322.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22345931 is a prime.

It is a super-2 number, since 2×22345931² = 998681264513522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22345894 and 22345903.

It is not a weakly prime, because it can be changed into another prime (22345937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11172965 + 11172966.

It is an arithmetic number, because the mean of its divisors is an integer number (11172966).

Almost surely, 2^22345931 is an apocalyptic number.

22345931 is a deficient number, since it is larger than the sum of its proper divisors (1).

22345931 is an equidigital number, since it uses as much as digits as its factorization.

22345931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 22345931 is about 4727.1482946910. The cubic root of 22345931 is about 281.6649567877.

The spelling of 22345931 in words is "twenty-two million, three hundred forty-five thousand, nine hundred thirty-one".