123311404331420 has 48 divisors (see below), whose sum is σ = 272584128835200. Its totient is φ = 46728356535360.

The previous prime is 123311404331317. The next prime is 123311404331503. The reversal of 123311404331420 is 24133404113321.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 148596011 + ... + 149423549.

It is an arithmetic number, because the mean of its divisors is an integer number (5678836017400).

Almost surely, 2^{123311404331420} is an apocalyptic number.

123311404331420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123311404331420 is an abundant number, since it is smaller than the sum of its proper divisors (149272724503780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123311404331420 is a wasteful number, since it uses less digits than its factorization.

123311404331420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219698 (or 1219696 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 123311404331420 its reverse (24133404113321), we get a palindrome (147444808444741).

The spelling of 123311404331420 in words is "one hundred twenty-three trillion, three hundred eleven billion, four hundred four million, three hundred thirty-one thousand, four hundred twenty".