123123331211333 has 4 divisors (see below), whose sum is σ = 123123392298528. Its totient is φ = 123123270124140.

The previous prime is 123123331211323. The next prime is 123123331211339. The reversal of 123123331211333 is 333112133321321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123123331211333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123123331211333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123123331211339) 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, 27413363 + ... + 31587008.

It is an arithmetic number, because the mean of its divisors is an integer number (30780848074632).

Almost surely, 2^{123123331211333} is an apocalyptic number.

It is an amenable number.

123123331211333 is a deficient number, since it is larger than the sum of its proper divisors (61087195).

123123331211333 is an equidigital number, since it uses as much as digits as its factorization.

123123331211333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61087194.

The product of its digits is 17496, while the sum is 32.

Adding to 123123331211333 its reverse (333112133321321), we get a palindrome (456235464532654).

The spelling of 123123331211333 in words is "one hundred twenty-three trillion, one hundred twenty-three billion, three hundred thirty-one million, two hundred eleven thousand, three hundred thirty-three".