12331156 has 12 divisors (see below), whose sum is σ = 21692692. Its totient is φ = 6133248.

The previous prime is 12331147. The next prime is 12331157. The reversal of 12331156 is 65113321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6081156 + 6250000 = 2466^2 + 2500^2 .

It is a super-3 number, since 3×12331156³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331157) 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, 7215 + ... + 8758.

Almost surely, 2^12331156 is an apocalyptic number.

It is an amenable number.

12331156 is a deficient number, since it is larger than the sum of its proper divisors (9361536).

12331156 is a wasteful number, since it uses less digits than its factorization.

12331156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16170 (or 16168 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 12331156 is about 3511.5745756000. The cubic root of 12331156 is about 231.0297619743.

Adding to 12331156 its reverse (65113321), we get a palindrome (77444477).

The spelling of 12331156 in words is "twelve million, three hundred thirty-one thousand, one hundred fifty-six".