13143387 has 8 divisors (see below), whose sum is σ = 17543680. Its totient is φ = 8752680.

The previous prime is 13143379. The next prime is 13143391. The reversal of 13143387 is 78334131.

13143387 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13143387 - 2³ = 13143379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13143187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1914 + ... + 5472.

It is an arithmetic number, because the mean of its divisors is an integer number (2192960).

Almost surely, 2^13143387 is an apocalyptic number.

13143387 is a deficient number, since it is larger than the sum of its proper divisors (4400293).

13143387 is a wasteful number, since it uses less digits than its factorization.

13143387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4793.

The product of its digits is 6048, while the sum is 30.

The square root of 13143387 is about 3625.3809455008. The cubic root of 13143387 is about 235.9947990331.

It can be divided in two parts, 13143 and 387, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 13143387 in words is "thirteen million, one hundred forty-three thousand, three hundred eighty-seven".