123331310031403 has 4 divisors (see below), whose sum is σ = 123331703943168. Its totient is φ = 123330916119640.

The previous prime is 123331310031361. The next prime is 123331310031421. The reversal of 123331310031403 is 304130013133321.

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-123331310031403 is a prime.

It is a super-2 number, since 2×123331310031403² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123331310031473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196485868 + ... + 197112553.

It is an arithmetic number, because the mean of its divisors is an integer number (30832925985792).

Almost surely, 2^{123331310031403} is an apocalyptic number.

123331310031403 is a deficient number, since it is larger than the sum of its proper divisors (393911765).

123331310031403 is an equidigital number, since it uses as much as digits as its factorization.

123331310031403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393911764.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 123331310031403 its reverse (304130013133321), we get a palindrome (427461323164724).

The spelling of 123331310031403 in words is "one hundred twenty-three trillion, three hundred thirty-one billion, three hundred ten million, thirty-one thousand, four hundred three".