123310212101231 has 4 divisors (see below), whose sum is σ = 123310553359752. Its totient is φ = 123309870842712.

The previous prime is 123310212101207. The next prime is 123310212101309. The reversal of 123310212101231 is 132101212013321.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123310212101231 is a prime.

It is a super-2 number, since 2×123310212101231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123310212101197 and 123310212101206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123310212107231) 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, 170086676 + ... + 170810121.

It is an arithmetic number, because the mean of its divisors is an integer number (30827638339938).

Almost surely, 2^{123310212101231} is an apocalyptic number.

123310212101231 is a deficient number, since it is larger than the sum of its proper divisors (341258521).

123310212101231 is an equidigital number, since it uses as much as digits as its factorization.

123310212101231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341258520.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 123310212101231 its reverse (132101212013321), we get a palindrome (255411424114552).

The spelling of 123310212101231 in words is "one hundred twenty-three trillion, three hundred ten billion, two hundred twelve million, one hundred one thousand, two hundred thirty-one".