523415231 has 2 divisors, whose sum is σ = 523415232. Its totient is φ = 523415230.

The previous prime is 523415149. The next prime is 523415239. The reversal of 523415231 is 132514325.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 523415231 - 2¹⁴ = 523398847 is a prime.

It is a super-2 number, since 2×523415231² = 547927008085566722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 523415231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523415239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261707615 + 261707616.

It is an arithmetic number, because the mean of its divisors is an integer number (261707616).

Almost surely, 2^523415231 is an apocalyptic number.

523415231 is a deficient number, since it is larger than the sum of its proper divisors (1).

523415231 is an equidigital number, since it uses as much as digits as its factorization.

523415231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 26.

The square root of 523415231 is about 22878.2698428006. The cubic root of 523415231 is about 805.9017868865.

Adding to 523415231 its reverse (132514325), we get a palindrome (655929556).

The spelling of 523415231 in words is "five hundred twenty-three million, four hundred fifteen thousand, two hundred thirty-one".