123310312311020 has 24 divisors (see below), whose sum is σ = 260448486241104. Its totient is φ = 49039014374336.

The previous prime is 123310312311019. The next prime is 123310312311031. The reversal of 123310312311020 is 20113213013321.

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 7 ways as a sum of consecutive naturals, for example, 17819405834 + ... + 17819412753.

It is an arithmetic number, because the mean of its divisors is an integer number (10852020260046).

Almost surely, 2^{123310312311020} is an apocalyptic number.

123310312311020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123310312311020 is an abundant number, since it is smaller than the sum of its proper divisors (137138173930084).

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

123310312311020 is a wasteful number, since it uses less digits than its factorization.

123310312311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35638818769 (or 35638818767 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 123310312311020 its reverse (20113213013321), we get a palindrome (143423525324341).

The spelling of 123310312311020 in words is "one hundred twenty-three trillion, three hundred ten billion, three hundred twelve million, three hundred eleven thousand, twenty".