123230231 has 2 divisors, whose sum is σ = 123230232. Its totient is φ = 123230230.

The previous prime is 123230221. The next prime is 123230243. The reversal of 123230231 is 132032321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123230231 - 2²² = 119035927 is a prime.

It is a super-2 number, since 2×123230231² = 30371379664626722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123230221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61615115 + 61615116.

It is an arithmetic number, because the mean of its divisors is an integer number (61615116).

Almost surely, 2^123230231 is an apocalyptic number.

123230231 is a deficient number, since it is larger than the sum of its proper divisors (1).

123230231 is an equidigital number, since it uses as much as digits as its factorization.

123230231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 123230231 is about 11100.9112689004. The cubic root of 123230231 is about 497.6290832778.

Adding to 123230231 its reverse (132032321), we get a palindrome (255262552).

The spelling of 123230231 in words is "one hundred twenty-three million, two hundred thirty thousand, two hundred thirty-one".