231234310120 has 128 divisors (see below), whose sum is σ = 577414656000. Its totient is φ = 82633478400.

The previous prime is 231234310103. The next prime is 231234310123. The reversal of 231234310120 is 21013432132.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 231234310091 and 231234310100.

It is not an unprimeable number, because it can be changed into a prime (231234310123) 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, 12696781 + ... + 12714979.

It is an arithmetic number, because the mean of its divisors is an integer number (4511052000).

Almost surely, 2^231234310120 is an apocalyptic number.

231234310120 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 231234310120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288707328000).

231234310120 is an abundant number, since it is smaller than the sum of its proper divisors (346180345880).

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

231234310120 is a wasteful number, since it uses less digits than its factorization.

231234310120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18719 (or 18715 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 231234310120 its reverse (21013432132), we get a palindrome (252247742252).

The spelling of 231234310120 in words is "two hundred thirty-one billion, two hundred thirty-four million, three hundred ten thousand, one hundred twenty".