13117291 has 16 divisors (see below), whose sum is σ = 15079680. Its totient is φ = 11293920.

The previous prime is 13117259. The next prime is 13117331. The reversal of 13117291 is 19271131.

13117291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13117291 - 2⁵ = 13117259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13117211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34981 + ... + 35353.

It is an arithmetic number, because the mean of its divisors is an integer number (942480).

Almost surely, 2^13117291 is an apocalyptic number.

13117291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13117291 is a deficient number, since it is larger than the sum of its proper divisors (1962389).

13117291 is a wasteful number, since it uses less digits than its factorization.

13117291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its digits is 378, while the sum is 25.

The square root of 13117291 is about 3621.7800871947. The cubic root of 13117291 is about 235.8385074912.

The spelling of 13117291 in words is "thirteen million, one hundred seventeen thousand, two hundred ninety-one".