13487312 has 10 divisors (see below), whose sum is σ = 26131698. Its totient is φ = 6743648.

The previous prime is 13487297. The next prime is 13487323. The reversal of 13487312 is 21378431.

13487312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10086976 + 3400336 = 3176^2 + 1844^2 .

It is a super-3 number, since 3×13487312³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421463 + ... + 421494.

Almost surely, 2^13487312 is an apocalyptic number.

It is an amenable number.

13487312 is a deficient number, since it is larger than the sum of its proper divisors (12644386).

13487312 is an equidigital number, since it uses as much as digits as its factorization.

13487312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842965 (or 842959 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 13487312 is about 3672.5075901896. The cubic root of 13487312 is about 238.0355383223.

The spelling of 13487312 in words is "thirteen million, four hundred eighty-seven thousand, three hundred twelve".