13131472 has 20 divisors (see below), whose sum is σ = 25707556. Its totient is φ = 6497280.

The previous prime is 13131467. The next prime is 13131479. The reversal of 13131472 is 27413131.

It can be written as a sum of positive squares in 2 ways, for example, as 8620096 + 4511376 = 2936^2 + 2124^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131479) by changing a digit.

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, 2679 + ... + 5782.

Almost surely, 2^13131472 is an apocalyptic number.

It is an amenable number.

13131472 is a deficient number, since it is larger than the sum of its proper divisors (12576084).

13131472 is an equidigital number, since it uses as much as digits as its factorization.

13131472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8566 (or 8560 counting only the distinct ones).

The product of its digits is 504, while the sum is 22.

The square root of 13131472 is about 3623.7372973216. The cubic root of 13131472 is about 235.9234646008.

The spelling of 13131472 in words is "thirteen million, one hundred thirty-one thousand, four hundred seventy-two".