123231121131000 has 128 divisors (see below), whose sum is σ = 384489401774400. Its totient is φ = 32860922572800.

The previous prime is 123231121130983. The next prime is 123231121131103. The reversal of 123231121131000 is 131121132321.

It is a super-2 number, since 2×123231121131000² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146607924 + ... + 147446076.

Almost surely, 2^{123231121131000} is an apocalyptic number.

123231121131000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123231121131000 is an abundant number, since it is smaller than the sum of its proper divisors (261258280643400).

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

123231121131000 is a wasteful number, since it uses less digits than its factorization.

123231121131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887186 (or 887172 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 123231121131000 its reverse (131121132321), we get a palindrome (123362242263321).

The spelling of 123231121131000 in words is "one hundred twenty-three trillion, two hundred thirty-one billion, one hundred twenty-one million, one hundred thirty-one thousand".