231323202120 has 128 divisors (see below), whose sum is σ = 711227018880. Its totient is φ = 60153600000.

The previous prime is 231323202119. The next prime is 231323202151. The reversal of 231323202120 is 21202323132.

It is a happy number.

231323202120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 11852370 + ... + 11871870.

It is an arithmetic number, because the mean of its divisors is an integer number (5556461085).

Almost surely, 2^231323202120 is an apocalyptic number.

231323202120 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 231323202120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355613509440).

231323202120 is an abundant number, since it is smaller than the sum of its proper divisors (479903816760).

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

231323202120 is a wasteful number, since it uses less digits than its factorization.

231323202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21967 (or 21963 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 231323202120 its reverse (21202323132), we get a palindrome (252525525252).

The spelling of 231323202120 in words is "two hundred thirty-one billion, three hundred twenty-three million, two hundred two thousand, one hundred twenty".