123013232031020 has 48 divisors (see below), whose sum is σ = 261689204649600. Its totient is φ = 48565458289920.

The previous prime is 123013232031017. The next prime is 123013232031043. The reversal of 123013232031020 is 20130232310321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9086135 + ... + 18126894.

It is an arithmetic number, because the mean of its divisors is an integer number (5451858430200).

Almost surely, 2^{123013232031020} is an apocalyptic number.

123013232031020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123013232031020 is an abundant number, since it is smaller than the sum of its proper divisors (138675972618580).

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

123013232031020 is a wasteful number, since it uses less digits than its factorization.

123013232031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27215978 (or 27215976 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 123013232031020 its reverse (20130232310321), we get a palindrome (143143464341341).

The spelling of 123013232031020 in words is "one hundred twenty-three trillion, thirteen billion, two hundred thirty-two million, thirty-one thousand, twenty".