13888131 has 4 divisors (see below), whose sum is σ = 18517512. Its totient is φ = 9258752.

The previous prime is 13888117. The next prime is 13888153. The reversal of 13888131 is 13188831.

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 13888131 - 2⁷ = 13888003 is a prime.

It is a super-2 number, since 2×13888131² = 385760365346322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13888092 and 13888101.

It is not an unprimeable number, because it can be changed into a prime (13888111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2314686 + ... + 2314691.

It is an arithmetic number, because the mean of its divisors is an integer number (4629378).

Almost surely, 2^13888131 is an apocalyptic number.

13888131 is a deficient number, since it is larger than the sum of its proper divisors (4629381).

13888131 is an equidigital number, since it uses as much as digits as its factorization.

13888131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4629380.

The product of its digits is 4608, while the sum is 33.

The square root of 13888131 is about 3726.6782796480. The cubic root of 13888131 is about 240.3705560453.

The spelling of 13888131 in words is "thirteen million, eight hundred eighty-eight thousand, one hundred thirty-one".