12153231 has 12 divisors (see below), whose sum is σ = 17611152. Its totient is φ = 8076096.

The previous prime is 12153221. The next prime is 12153247. The reversal of 12153231 is 13235121.

12153231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12153231 - 2⁵ = 12153199 is a prime.

It is a super-2 number, since 2×12153231² = 295402047478722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12153221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1030 + ... + 5036.

It is an arithmetic number, because the mean of its divisors is an integer number (1467596).

Almost surely, 2^12153231 is an apocalyptic number.

12153231 is a deficient number, since it is larger than the sum of its proper divisors (5457921).

12153231 is a wasteful number, since it uses less digits than its factorization.

12153231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350 (or 4347 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 12153231 is about 3486.1484477859. The cubic root of 12153231 is about 229.9132060665.

Adding to 12153231 its reverse (13235121), we get a palindrome (25388352).

The spelling of 12153231 in words is "twelve million, one hundred fifty-three thousand, two hundred thirty-one".