231123231000000 has 588 divisors, whose sum is σ = 828994668107424. Its totient is φ = 61564838400000.

The previous prime is 231123230999893. The next prime is 231123231000017. The reversal of 231123231000000 is 132321132.

231123231000000 is a `hidden beast` number, since 231 + 12 + 323 + 100 + 0 + 0 + 0 + 0 = 666.

It is a super-2 number, since 2×231123231000000² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 8432986297 + ... + 8433013703.

Almost surely, 2^{231123231000000} is an apocalyptic number.

231123231000000 is a gapful number since it is divisible by the number (20) 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 231123231000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414497334053712).

231123231000000 is an abundant number, since it is smaller than the sum of its proper divisors (597871437107424).

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

231123231000000 is an frugal number, since it uses more digits than its factorization.

231123231000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28392 (or 28354 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 231123231000000 its reverse (132321132), we get a palindrome (231123363321132).

The spelling of 231123231000000 in words is "two hundred thirty-one trillion, one hundred twenty-three billion, two hundred thirty-one million", and thus it is an aban number.