231134240000 has 180 divisors, whose sum is σ = 606873738240. Its totient is φ = 87586560000.

The previous prime is 231134239991. The next prime is 231134240011. The reversal of 231134240000 is 42431132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3001985 + ... + 3078015.

It is an arithmetic number, because the mean of its divisors is an integer number (3371520768).

Almost surely, 2^231134240000 is an apocalyptic number.

231134240000 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 231134240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303436869120).

231134240000 is an abundant number, since it is smaller than the sum of its proper divisors (375739498240).

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

231134240000 is an frugal number, since it uses more digits than its factorization.

231134240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76086 (or 76057 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 231134240000 its reverse (42431132), we get a palindrome (231176671132).

The spelling of 231134240000 in words is "two hundred thirty-one billion, one hundred thirty-four million, two hundred forty thousand".