231615152 has 40 divisors (see below), whose sum is σ = 473969664. Its totient is φ = 109423424.

The previous prime is 231615151. The next prime is 231615169. The reversal of 231615152 is 251516132.

231615152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231615151) 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, 26753 + ... + 34335.

Almost surely, 2^231615152 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 231615152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236984832).

231615152 is an abundant number, since it is smaller than the sum of its proper divisors (242354512).

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

231615152 is a wasteful number, since it uses less digits than its factorization.

231615152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7697 (or 7691 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 231615152 is about 15218.9077137619. The cubic root of 231615152 is about 614.1234141675.

The spelling of 231615152 in words is "two hundred thirty-one million, six hundred fifteen thousand, one hundred fifty-two".