13087143 has 32 divisors (see below), whose sum is σ = 20697600. Its totient is φ = 8149248.

The previous prime is 13087111. The next prime is 13087153. The reversal of 13087143 is 34178031.

It is not a de Polignac number, because 13087143 - 2⁵ = 13087111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13087153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49630 + ... + 49892.

It is an arithmetic number, because the mean of its divisors is an integer number (646800).

Almost surely, 2^13087143 is an apocalyptic number.

13087143 is a deficient number, since it is larger than the sum of its proper divisors (7610457).

13087143 is a wasteful number, since it uses less digits than its factorization.

13087143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13087143 is about 3617.6156512266. The cubic root of 13087143 is about 235.6576898361.

The spelling of 13087143 in words is "thirteen million, eighty-seven thousand, one hundred forty-three".