230512531 has 2 divisors, whose sum is σ = 230512532. Its totient is φ = 230512530.

The previous prime is 230512519. The next prime is 230512567. The reversal of 230512531 is 135215032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 230512531 - 2⁹ = 230512019 is a prime.

It is a super-2 number, since 2×230512531² = 106272053896051922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (230512031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115256265 + 115256266.

It is an arithmetic number, because the mean of its divisors is an integer number (115256266).

Almost surely, 2^230512531 is an apocalyptic number.

230512531 is a deficient number, since it is larger than the sum of its proper divisors (1).

230512531 is an equidigital number, since it uses as much as digits as its factorization.

230512531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 230512531 is about 15182.6391315871. The cubic root of 230512531 is about 613.1473370390.

Adding to 230512531 its reverse (135215032), we get a palindrome (365727563).

The spelling of 230512531 in words is "two hundred thirty million, five hundred twelve thousand, five hundred thirty-one".