123100033213231 has 4 divisors (see below), whose sum is σ = 128452208570352. Its totient is φ = 117747857856112.

The previous prime is 123100033213207. The next prime is 123100033213249. The reversal of 123100033213231 is 132312330001321.

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-123100033213231 is a prime.

It is a super-2 number, since 2×123100033213231² (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 = 123100033213196 and 123100033213205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123100033213931) 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, 2676087678526 + ... + 2676087678571.

It is an arithmetic number, because the mean of its divisors is an integer number (32113052142588).

Almost surely, 2^{123100033213231} is an apocalyptic number.

123100033213231 is a deficient number, since it is larger than the sum of its proper divisors (5352175357121).

123100033213231 is an equidigital number, since it uses as much as digits as its factorization.

123100033213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352175357120.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 123100033213231 its reverse (132312330001321), we get a palindrome (255412363214552).

The spelling of 123100033213231 in words is "one hundred twenty-three trillion, one hundred billion, thirty-three million, two hundred thirteen thousand, two hundred thirty-one".