231633152 has 36 divisors (see below), whose sum is σ = 465958416. Its totient is φ = 114915840.

The previous prime is 231633139. The next prime is 231633173. The reversal of 231633152 is 251336132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30083 + ... + 36989.

Almost surely, 2^231633152 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 231633152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232979208).

231633152 is an abundant number, since it is smaller than the sum of its proper divisors (234325264).

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

231633152 is an equidigital number, since it uses as much as digits as its factorization.

231633152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7054 (or 7040 counting only the distinct ones).

The product of its digits is 3240, while the sum is 26.

The square root of 231633152 is about 15219.4990719143. The cubic root of 231633152 is about 614.1393226476.

Adding to 231633152 its reverse (251336132), we get a palindrome (482969284).

The spelling of 231633152 in words is "two hundred thirty-one million, six hundred thirty-three thousand, one hundred fifty-two".