231813054 has 96 divisors (see below), whose sum is σ = 590185440. Its totient is φ = 64972800.

The previous prime is 231813047. The next prime is 231813077. The reversal of 231813054 is 450318132.

It is a happy number.

231813054 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 204762 + ... + 205890.

It is an arithmetic number, because the mean of its divisors is an integer number (6147765).

Almost surely, 2^231813054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231813054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295092720).

231813054 is an abundant number, since it is smaller than the sum of its proper divisors (358372386).

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

231813054 is a wasteful number, since it uses less digits than its factorization.

231813054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 231813054 is about 15225.4081718685. The cubic root of 231813054 is about 614.2982755731.

The spelling of 231813054 in words is "two hundred thirty-one million, eight hundred thirteen thousand, fifty-four".