13472731 has 4 divisors (see below), whose sum is σ = 13624200. Its totient is φ = 13321264.

The previous prime is 13472707. The next prime is 13472737. The reversal of 13472731 is 13727431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13472731 - 2⁷ = 13472603 is a prime.

It is a super-2 number, since 2×13472731² = 363028961196722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13472731.

It is not an unprimeable number, because it can be changed into a prime (13472737) 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, 75601 + ... + 75778.

It is an arithmetic number, because the mean of its divisors is an integer number (3406050).

Almost surely, 2^13472731 is an apocalyptic number.

13472731 is a deficient number, since it is larger than the sum of its proper divisors (151469).

13472731 is an equidigital number, since it uses as much as digits as its factorization.

13472731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151468.

The product of its digits is 3528, while the sum is 28.

The square root of 13472731 is about 3670.5218974963. The cubic root of 13472731 is about 237.9497281010.

The spelling of 13472731 in words is "thirteen million, four hundred seventy-two thousand, seven hundred thirty-one".