13231432 has 8 divisors (see below), whose sum is σ = 24808950. Its totient is φ = 6615712.

The previous prime is 13231411. The next prime is 13231481. The reversal of 13231432 is 23413231.

It can be written as a sum of positive squares in only one way, i.e., 7150276 + 6081156 = 2674^2 + 2466^2 .

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, 826957 + ... + 826972.

Almost surely, 2^13231432 is an apocalyptic number.

It is an amenable number.

13231432 is a deficient number, since it is larger than the sum of its proper divisors (11577518).

13231432 is a wasteful number, since it uses less digits than its factorization.

13231432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653935 (or 1653931 counting only the distinct ones).

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

The square root of 13231432 is about 3637.5035395172. The cubic root of 13231432 is about 236.5205878497.

Adding to 13231432 its reverse (23413231), we get a palindrome (36644663).

The spelling of 13231432 in words is "thirteen million, two hundred thirty-one thousand, four hundred thirty-two".