123131203423000 has 128 divisors (see below), whose sum is σ = 288554942894400. Its totient is φ = 49179386496000.

The previous prime is 123131203422943. The next prime is 123131203423001. The reversal of 123131203423000 is 324302131321.

It is a super-2 number, since 2×123131203423000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123131203423001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1864545982 + ... + 1864612018.

Almost surely, 2^{123131203423000} is an apocalyptic number.

123131203423000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123131203423000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144277471447200).

123131203423000 is an abundant number, since it is smaller than the sum of its proper divisors (165423739471400).

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

123131203423000 is a wasteful number, since it uses less digits than its factorization.

123131203423000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68798 (or 68784 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 123131203423000 its reverse (324302131321), we get a palindrome (123455505554321).

The spelling of 123131203423000 in words is "one hundred twenty-three trillion, one hundred thirty-one billion, two hundred three million, four hundred twenty-three thousand".