222657431 has 2 divisors, whose sum is σ = 222657432. Its totient is φ = 222657430.

The previous prime is 222657403. The next prime is 222657437. The reversal of 222657431 is 134756222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222657431 - 2⁶ = 222657367 is a prime.

It is a super-2 number, since 2×222657431² = 99152663159039522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222657437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111328715 + 111328716.

It is an arithmetic number, because the mean of its divisors is an integer number (111328716).

Almost surely, 2^222657431 is an apocalyptic number.

222657431 is a deficient number, since it is larger than the sum of its proper divisors (1).

222657431 is an equidigital number, since it uses as much as digits as its factorization.

222657431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 32.

The square root of 222657431 is about 14921.7100561564. The cubic root of 222657431 is about 606.1020198429.

The spelling of 222657431 in words is "two hundred twenty-two million, six hundred fifty-seven thousand, four hundred thirty-one".