123130404031321 has 4 divisors (see below), whose sum is σ = 123130581725200. Its totient is φ = 123130226337444.

The previous prime is 123130404031319. The next prime is 123130404031351.

123130404031321 is nontrivially palindromic in base 10.

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 not a de Polignac number, because 123130404031321 - 2¹ = 123130404031319 is a prime.

It is a super-2 number, since 2×123130404031321² (a number of 29 digits) contains 22 as substring.

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 123130404031321.

It is not an unprimeable number, because it can be changed into a prime (123130404031351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87803451 + ... + 89194768.

It is an arithmetic number, because the mean of its divisors is an integer number (30782645431300).

Almost surely, 2^{123130404031321} is an apocalyptic number.

It is an amenable number.

123130404031321 is a deficient number, since it is larger than the sum of its proper divisors (177693879).

123130404031321 is an equidigital number, since it uses as much as digits as its factorization.

123130404031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177693878.

The product of its (nonzero) digits is 5184, while the sum is 28.

It can be divided in two parts, 12313040 and 4031321, that added together give a palindrome (16344361).

The spelling of 123130404031321 in words is "one hundred twenty-three trillion, one hundred thirty billion, four hundred four million, thirty-one thousand, three hundred twenty-one".