13143085 has 4 divisors (see below), whose sum is σ = 15771708. Its totient is φ = 10514464.

The previous prime is 13143077. The next prime is 13143089. The reversal of 13143085 is 58034131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9616201 + 3526884 = 3101^2 + 1878^2 .

It is a cyclic number.

It is not a de Polignac number, because 13143085 - 2³ = 13143077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13143089) 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, 1314304 + ... + 1314313.

It is an arithmetic number, because the mean of its divisors is an integer number (3942927).

Almost surely, 2^13143085 is an apocalyptic number.

It is an amenable number.

13143085 is a deficient number, since it is larger than the sum of its proper divisors (2628623).

13143085 is an equidigital number, since it uses as much as digits as its factorization.

13143085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628622.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 13143085 is about 3625.3392944661. The cubic root of 13143085 is about 235.9929915088.

The spelling of 13143085 in words is "thirteen million, one hundred forty-three thousand, eighty-five".