13115397 has 16 divisors (see below), whose sum is σ = 17989632. Its totient is φ = 8495280.

The previous prime is 13115371. The next prime is 13115423. The reversal of 13115397 is 79351131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13115371) and next prime (13115423).

It is not a de Polignac number, because 13115397 - 2¹⁴ = 13099013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13115197) 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, 26688 + ... + 27174.

It is an arithmetic number, because the mean of its divisors is an integer number (1124352).

Almost surely, 2^13115397 is an apocalyptic number.

It is an amenable number.

13115397 is a deficient number, since it is larger than the sum of its proper divisors (4874235).

13115397 is a wasteful number, since it uses less digits than its factorization.

13115397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728.

The product of its digits is 2835, while the sum is 30.

The square root of 13115397 is about 3621.5186041218. The cubic root of 13115397 is about 235.8271560713.

The spelling of 13115397 in words is "thirteen million, one hundred fifteen thousand, three hundred ninety-seven".