231507648 has 84 divisors (see below), whose sum is σ = 679828968. Its totient is φ = 75279360.

The previous prime is 231507623. The next prime is 231507691. The reversal of 231507648 is 846705132.

231507648 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 0 + 7 + 648 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18715 + ... + 28517.

It is an arithmetic number, because the mean of its divisors is an integer number (8093202).

Almost surely, 2^231507648 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 231507648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339914484).

231507648 is an abundant number, since it is smaller than the sum of its proper divisors (448321320).

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

231507648 is a wasteful number, since it uses less digits than its factorization.

231507648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9862 (or 9849 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 231507648 is about 15215.3753815014. The cubic root of 231507648 is about 614.0283844885.

The spelling of 231507648 in words is "two hundred thirty-one million, five hundred seven thousand, six hundred forty-eight".