123331033111213 has 4 divisors (see below), whose sum is σ = 123331418049280. Its totient is φ = 123330648173148.

The previous prime is 123331033111147. The next prime is 123331033111259. The reversal of 123331033111213 is 312111330133321.

It is a happy number.

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-123331033111213 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 (123331033111813) 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, 191988045 + ... + 192629362.

It is an arithmetic number, because the mean of its divisors is an integer number (30832854512320).

Almost surely, 2^{123331033111213} is an apocalyptic number.

It is an amenable number.

123331033111213 is a deficient number, since it is larger than the sum of its proper divisors (384938067).

123331033111213 is an equidigital number, since it uses as much as digits as its factorization.

123331033111213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384938066.

The product of its (nonzero) digits is 2916, while the sum is 28.

Adding to 123331033111213 its reverse (312111330133321), we get a palindrome (435442363244534).

The spelling of 123331033111213 in words is "one hundred twenty-three trillion, three hundred thirty-one billion, thirty-three million, one hundred eleven thousand, two hundred thirteen".