231779648 has 56 divisors (see below), whose sum is σ = 484997760. Its totient is φ = 109683200.

The previous prime is 231779633. The next prime is 231779693. The reversal of 231779648 is 846977132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147893 + ... + 149451.

Almost surely, 2^231779648 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 231779648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242498880).

231779648 is an abundant number, since it is smaller than the sum of its proper divisors (253218112).

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

231779648 is a wasteful number, since it uses less digits than its factorization.

231779648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695 (or 1685 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The square root of 231779648 is about 15224.3110845779. The cubic root of 231779648 is about 614.2687658256.

The spelling of 231779648 in words is "two hundred thirty-one million, seven hundred seventy-nine thousand, six hundred forty-eight".