123031130313 has 16 divisors (see below), whose sum is σ = 201897239936. Its totient is φ = 64895541120.

The previous prime is 123031130297. The next prime is 123031130323. The reversal of 123031130313 is 313031130321.

It is not a de Polignac number, because 123031130313 - 2⁴ = 123031130297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 123031130313.

It is not an unprimeable number, because it can be changed into a prime (123031130323) 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, 225331468 + ... + 225332013.

It is an arithmetic number, because the mean of its divisors is an integer number (12618577496).

Almost surely, 2^123031130313 is an apocalyptic number.

123031130313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123031130313 is a deficient number, since it is larger than the sum of its proper divisors (78866109623).

123031130313 is a wasteful number, since it uses less digits than its factorization.

123031130313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450663504.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 123031130313 its reverse (313031130321), we get a palindrome (436062260634).

The spelling of 123031130313 in words is "one hundred twenty-three billion, thirty-one million, one hundred thirty thousand, three hundred thirteen".