231320351104 has 64 divisors (see below), whose sum is σ = 465716394000. Its totient is φ = 114437670912.

The previous prime is 231320351069. The next prime is 231320351123. The reversal of 231320351104 is 401153023132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10215507 + ... + 10238125.

Almost surely, 2^231320351104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231320351104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232858197000).

231320351104 is an abundant number, since it is smaller than the sum of its proper divisors (234396042896).

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

231320351104 is a wasteful number, since it uses less digits than its factorization.

231320351104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23475 (or 23463 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 231320351104 its reverse (401153023132), we get a palindrome (632473374236).

The spelling of 231320351104 in words is "two hundred thirty-one billion, three hundred twenty million, three hundred fifty-one thousand, one hundred four".