522423431 has 2 divisors, whose sum is σ = 522423432. Its totient is φ = 522423430.

The previous prime is 522423359. The next prime is 522423511. The reversal of 522423431 is 134324225.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522423431 is a prime.

It is a super-2 number, since 2×522423431² = 545852482515623522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 522423431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522423731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261211715 + 261211716.

It is an arithmetic number, because the mean of its divisors is an integer number (261211716).

Almost surely, 2^522423431 is an apocalyptic number.

522423431 is a deficient number, since it is larger than the sum of its proper divisors (1).

522423431 is an equidigital number, since it uses as much as digits as its factorization.

522423431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 26.

The square root of 522423431 is about 22856.5839748638. The cubic root of 522423431 is about 805.3924406241.

Adding to 522423431 its reverse (134324225), we get a palindrome (656747656).

The spelling of 522423431 in words is "five hundred twenty-two million, four hundred twenty-three thousand, four hundred thirty-one".