231061264 has 80 divisors (see below), whose sum is σ = 530323200. Its totient is φ = 97466880.

The previous prime is 231061249. The next prime is 231061277. The reversal of 231061264 is 462160132.

231061264 is digitally balanced in base 2, 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 15 ways as a sum of consecutive naturals, for example, 389352 + ... + 389944.

It is an arithmetic number, because the mean of its divisors is an integer number (6629040).

Almost surely, 2^231061264 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 231061264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265161600).

231061264 is an abundant number, since it is smaller than the sum of its proper divisors (299261936).

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

231061264 is an equidigital number, since it uses as much as digits as its factorization.

231061264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 231061264 is about 15200.6994575908. The cubic root of 231061264 is about 613.6334820559.

The spelling of 231061264 in words is "two hundred thirty-one million, sixty-one thousand, two hundred sixty-four".