231495320 has 64 divisors (see below), whose sum is σ = 597775680. Its totient is φ = 79036416.

The previous prime is 231495317. The next prime is 231495343. The reversal of 231495320 is 23594132.

231495320 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70352 + ... + 73568.

It is an arithmetic number, because the mean of its divisors is an integer number (9340245).

Almost surely, 2^231495320 is an apocalyptic number.

231495320 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 231495320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298887840).

231495320 is an abundant number, since it is smaller than the sum of its proper divisors (366280360).

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

231495320 is a wasteful number, since it uses less digits than its factorization.

231495320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492 (or 3488 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 231495320 is about 15214.9702595832. The cubic root of 231495320 is about 614.0174850987.

The spelling of 231495320 in words is "two hundred thirty-one million, four hundred ninety-five thousand, three hundred twenty".