13113871 has 4 divisors (see below), whose sum is σ = 13336200. Its totient is φ = 12891544.

The previous prime is 13113811. The next prime is 13113929. The reversal of 13113871 is 17831131.

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

It is a cyclic number.

It is not a de Polignac number, because 13113871 - 2¹³ = 13105679 is a prime.

It is a super-2 number, since 2×13113871² = 343947225209282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113811) 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, 111076 + ... + 111193.

It is an arithmetic number, because the mean of its divisors is an integer number (3334050).

Almost surely, 2^13113871 is an apocalyptic number.

13113871 is a deficient number, since it is larger than the sum of its proper divisors (222329).

13113871 is an equidigital number, since it uses as much as digits as its factorization.

13113871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222328.

The product of its digits is 504, while the sum is 25.

The square root of 13113871 is about 3621.3079128956. The cubic root of 13113871 is about 235.8180094122.

The spelling of 13113871 in words is "thirteen million, one hundred thirteen thousand, eight hundred seventy-one".