123203113231213 has 16 divisors (see below), whose sum is σ = 123417943608960. Its totient is φ = 122988523415616.

The previous prime is 123203113231151. The next prime is 123203113231223. The reversal of 123203113231213 is 312132311302321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123203113231213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123203113231223) 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, 7433957395 + ... + 7433973967.

It is an arithmetic number, because the mean of its divisors is an integer number (7713621475560).

Almost surely, 2^{123203113231213} is an apocalyptic number.

It is an amenable number.

123203113231213 is a deficient number, since it is larger than the sum of its proper divisors (214830377747).

123203113231213 is a wasteful number, since it uses less digits than its factorization.

123203113231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23076.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 123203113231213 its reverse (312132311302321), we get a palindrome (435335424533534).

The spelling of 123203113231213 in words is "one hundred twenty-three trillion, two hundred three billion, one hundred thirteen million, two hundred thirty-one thousand, two hundred thirteen".