12331432 has 8 divisors (see below), whose sum is σ = 23121450. Its totient is φ = 6165712.

The previous prime is 12331391. The next prime is 12331441. The reversal of 12331432 is 23413321.

It can be written as a sum of positive squares in only one way, i.e., 8145316 + 4186116 = 2854^2 + 2046^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770707 + ... + 770722.

Almost surely, 2^12331432 is an apocalyptic number.

It is an amenable number.

12331432 is a deficient number, since it is larger than the sum of its proper divisors (10790018).

12331432 is a wasteful number, since it uses less digits than its factorization.

12331432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541435 (or 1541431 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 12331432 is about 3511.6138739901. The cubic root of 12331432 is about 231.0314856229.

Adding to 12331432 its reverse (23413321), we get a palindrome (35744753).

The spelling of 12331432 in words is "twelve million, three hundred thirty-one thousand, four hundred thirty-two".