231560448 has 144 divisors (see below), whose sum is σ = 741726720. Its totient is φ = 62650368.

The previous prime is 231560431. The next prime is 231560479. The reversal of 231560448 is 844065132.

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, 101011 + ... + 103277.

It is an arithmetic number, because the mean of its divisors is an integer number (5150880).

Almost surely, 2^231560448 is an apocalyptic number.

231560448 is a gapful number since it is divisible by the number (28) 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 231560448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370863360).

231560448 is an abundant number, since it is smaller than the sum of its proper divisors (510166272).

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

231560448 is a wasteful number, since it uses less digits than its factorization.

231560448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2312 (or 2298 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 231560448 is about 15217.1103695807. The cubic root of 231560448 is about 614.0750614696.

The spelling of 231560448 in words is "two hundred thirty-one million, five hundred sixty thousand, four hundred forty-eight".