13231456 has 24 divisors (see below), whose sum is σ = 29771280. Its totient is φ = 5670528.

The previous prime is 13231411. The next prime is 13231481. The reversal of 13231456 is 65413231.

It is a self number, because there is not a number n which added to its sum of digits gives 13231456.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 29311 + ... + 29758.

It is an arithmetic number, because the mean of its divisors is an integer number (1240470).

Almost surely, 2^13231456 is an apocalyptic number.

13231456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13231456 is an abundant number, since it is smaller than the sum of its proper divisors (16539824).

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

13231456 is an equidigital number, since it uses as much as digits as its factorization.

13231456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59086 (or 59078 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 13231456 is about 3637.5068384815. The cubic root of 13231456 is about 236.5207308549.

Adding to 13231456 its reverse (65413231), we get a palindrome (78644687).

The spelling of 13231456 in words is "thirteen million, two hundred thirty-one thousand, four hundred fifty-six".