231312131122123 has 16 divisors (see below), whose sum is σ = 240927022692576. Its totient is φ = 221900705994240.

The previous prime is 231312131122091. The next prime is 231312131122157. The reversal of 231312131122123 is 321221131213132.

It is a cyclic number.

It is not a de Polignac number, because 231312131122123 - 2⁵ = 231312131122091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231312131122091 and 231312131122100.

It is not an unprimeable number, because it can be changed into a prime (231312138122123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63354286 + ... + 66905827.

It is an arithmetic number, because the mean of its divisors is an integer number (15057938918286).

Almost surely, 2^{231312131122123} is an apocalyptic number.

231312131122123 is a deficient number, since it is larger than the sum of its proper divisors (9614891570453).

231312131122123 is a wasteful number, since it uses less digits than its factorization.

231312131122123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130260894.

The product of its digits is 2592, while the sum is 28.

Adding to 231312131122123 its reverse (321221131213132), we get a palindrome (552533262335255).

The spelling of 231312131122123 in words is "two hundred thirty-one trillion, three hundred twelve billion, one hundred thirty-one million, one hundred twenty-two thousand, one hundred twenty-three".