231310232123 has 4 divisors (see below), whose sum is σ = 231737793168. Its totient is φ = 230882671080.

The previous prime is 231310232107. The next prime is 231310232149. The reversal of 231310232123 is 321232013132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231310232123 - 2⁴ = 231310232107 is a prime.

It is a super-2 number, since 2×231310232123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231310232173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213779711 + ... + 213780792.

It is an arithmetic number, because the mean of its divisors is an integer number (57934448292).

Almost surely, 2^231310232123 is an apocalyptic number.

231310232123 is a deficient number, since it is larger than the sum of its proper divisors (427561045).

231310232123 is an equidigital number, since it uses as much as digits as its factorization.

231310232123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427561044.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231310232123 its reverse (321232013132), we get a palindrome (552542245255).

The spelling of 231310232123 in words is "two hundred thirty-one billion, three hundred ten million, two hundred thirty-two thousand, one hundred twenty-three".