231087648 has 48 divisors (see below), whose sum is σ = 661754016. Its totient is φ = 70026240.

The previous prime is 231087643. The next prime is 231087667. The reversal of 231087648 is 846780132.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (231087643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108361 + ... + 110472.

It is an arithmetic number, because the mean of its divisors is an integer number (13786542).

Almost surely, 2^231087648 is an apocalyptic number.

It is an amenable number.

231087648 is an abundant number, since it is smaller than the sum of its proper divisors (430666368).

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

231087648 is a wasteful number, since it uses less digits than its factorization.

231087648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218857 (or 218849 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 231087648 is about 15201.5672876187. The cubic root of 231087648 is about 613.6568373186.

The spelling of 231087648 in words is "two hundred thirty-one million, eighty-seven thousand, six hundred forty-eight".