123110231 has 2 divisors, whose sum is σ = 123110232. Its totient is φ = 123110230.

The previous prime is 123110219. The next prime is 123110233. The reversal of 123110231 is 132011321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123110231 is a prime.

It is a super-2 number, since 2×123110231² = 30312257953746722, which contains 22 as substring.

Together with 123110233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123110233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61555115 + 61555116.

It is an arithmetic number, because the mean of its divisors is an integer number (61555116).

Almost surely, 2^123110231 is an apocalyptic number.

123110231 is a deficient number, since it is larger than the sum of its proper divisors (1).

123110231 is an equidigital number, since it uses as much as digits as its factorization.

123110231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 123110231 is about 11095.5049907609. The cubic root of 123110231 is about 497.4675025699.

Adding to 123110231 its reverse (132011321), we get a palindrome (255121552).

The spelling of 123110231 in words is "one hundred twenty-three million, one hundred ten thousand, two hundred thirty-one".