231155152 has 20 divisors (see below), whose sum is σ = 467336160. Its totient is φ = 110552288.

The previous prime is 231155149. The next prime is 231155153. The reversal of 231155152 is 251551132.

231155152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231155152² = 106865408592286208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231155153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313702 + ... + 314437.

It is an arithmetic number, because the mean of its divisors is an integer number (23366808).

Almost surely, 2^231155152 is an apocalyptic number.

It is an amenable number.

231155152 is an abundant number, since it is smaller than the sum of its proper divisors (236181008).

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

231155152 is a wasteful number, since it uses less digits than its factorization.

231155152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628170 (or 628164 counting only the distinct ones).

The product of its digits is 1500, while the sum is 25.

The square root of 231155152 is about 15203.7874228759. The cubic root of 231155152 is about 613.7165841414.

The spelling of 231155152 in words is "two hundred thirty-one million, one hundred fifty-five thousand, one hundred fifty-two".