22429931 has 2 divisors, whose sum is σ = 22429932. Its totient is φ = 22429930.

The previous prime is 22429909. The next prime is 22429943. The reversal of 22429931 is 13992422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22429931 - 2⁶ = 22429867 is a prime.

It is a super-2 number, since 2×22429931² = 1006203609329522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22429331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11214965 + 11214966.

It is an arithmetic number, because the mean of its divisors is an integer number (11214966).

Almost surely, 2^22429931 is an apocalyptic number.

22429931 is a deficient number, since it is larger than the sum of its proper divisors (1).

22429931 is an equidigital number, since it uses as much as digits as its factorization.

22429931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 22429931 is about 4736.0248099012. The cubic root of 22429931 is about 282.0174485792.

The spelling of 22429931 in words is "twenty-two million, four hundred twenty-nine thousand, nine hundred thirty-one".