231057500 has 60 divisors (see below), whose sum is σ = 522863880. Its totient is φ = 89208000.

The previous prime is 231057467. The next prime is 231057503. The reversal of 231057500 is 5750132.

231057500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231057503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 70907 + ... + 74093.

It is an arithmetic number, because the mean of its divisors is an integer number (8714398).

Almost surely, 2^231057500 is an apocalyptic number.

231057500 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 231057500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261431940).

231057500 is an abundant number, since it is smaller than the sum of its proper divisors (291806380).

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

231057500 is a wasteful number, since it uses less digits than its factorization.

231057500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240 (or 3223 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 231057500 is about 15200.5756469944. The cubic root of 231057500 is about 613.6301499974.

The spelling of 231057500 in words is "two hundred thirty-one million, fifty-seven thousand, five hundred".