230688631 has 2 divisors, whose sum is σ = 230688632. Its totient is φ = 230688630.

The previous prime is 230688613. The next prime is 230688659. The reversal of 230688631 is 136886032.

230688631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (230688613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 230688631 - 2⁷ = 230688503 is a prime.

It is a super-2 number, since 2×230688631² = 106434488945308322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230682631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115344315 + 115344316.

It is an arithmetic number, because the mean of its divisors is an integer number (115344316).

Almost surely, 2^230688631 is an apocalyptic number.

230688631 is a deficient number, since it is larger than the sum of its proper divisors (1).

230688631 is an equidigital number, since it uses as much as digits as its factorization.

230688631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 230688631 is about 15188.4374113995. The cubic root of 230688631 is about 613.3034352221.

The spelling of 230688631 in words is "two hundred thirty million, six hundred eighty-eight thousand, six hundred thirty-one".