231313121023 has 2 divisors, whose sum is σ = 231313121024. Its totient is φ = 231313121022.

The previous prime is 231313120981. The next prime is 231313121027. The reversal of 231313121023 is 320121313132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231313121023 - 2²⁵ = 231279566591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231313120985 and 231313121003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231313121027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115656560511 + 115656560512.

It is an arithmetic number, because the mean of its divisors is an integer number (115656560512).

Almost surely, 2^231313121023 is an apocalyptic number.

231313121023 is a deficient number, since it is larger than the sum of its proper divisors (1).

231313121023 is an equidigital number, since it uses as much as digits as its factorization.

231313121023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231313121023 its reverse (320121313132), we get a palindrome (551434434155).

The spelling of 231313121023 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred twenty-one thousand, twenty-three".