231304400123 has 2 divisors, whose sum is σ = 231304400124. Its totient is φ = 231304400122.

The previous prime is 231304400057. The next prime is 231304400137. The reversal of 231304400123 is 321004403132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231304400123 - 2⁸ = 231304399867 is a prime.

It is not a weakly prime, because it can be changed into another prime (231304400023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115652200061 + 115652200062.

It is an arithmetic number, because the mean of its divisors is an integer number (115652200062).

Almost surely, 2^231304400123 is an apocalyptic number.

231304400123 is a deficient number, since it is larger than the sum of its proper divisors (1).

231304400123 is an equidigital number, since it uses as much as digits as its factorization.

231304400123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 231304400123 its reverse (321004403132), we get a palindrome (552308803255).

The spelling of 231304400123 in words is "two hundred thirty-one billion, three hundred four million, four hundred thousand, one hundred twenty-three".