13988031 has 8 divisors (see below), whose sum is σ = 18669360. Its totient is φ = 9316032.

The previous prime is 13988021. The next prime is 13988033. The reversal of 13988031 is 13088931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13988031 - 2⁷ = 13987903 is a prime.

It is a super-2 number, since 2×13988031² = 391330022513922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13987983 and 13988001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13988033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2755 + ... + 5963.

It is an arithmetic number, because the mean of its divisors is an integer number (2333670).

Almost surely, 2^13988031 is an apocalyptic number.

13988031 is a deficient number, since it is larger than the sum of its proper divisors (4681329).

13988031 is a wasteful number, since it uses less digits than its factorization.

13988031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4665.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 13988031 is about 3740.0576198770. The cubic root of 13988031 is about 240.9455235190.

The spelling of 13988031 in words is "thirteen million, nine hundred eighty-eight thousand, thirty-one".