13996531 has 8 divisors (see below), whose sum is σ = 14947200. Its totient is φ = 13077120.

The previous prime is 13996529. The next prime is 13996537. The reversal of 13996531 is 13569931.

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

It is a cyclic number.

It is not a de Polignac number, because 13996531 - 2¹ = 13996529 is a prime.

It is a super-2 number, since 2×13996531² = 391805760067922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13996537) 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, 6886 + ... + 8683.

It is an arithmetic number, because the mean of its divisors is an integer number (1868400).

Almost surely, 2^13996531 is an apocalyptic number.

13996531 is a deficient number, since it is larger than the sum of its proper divisors (950669).

13996531 is a wasteful number, since it uses less digits than its factorization.

13996531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15629.

The product of its digits is 21870, while the sum is 37.

The square root of 13996531 is about 3741.1937934301. The cubic root of 13996531 is about 240.9943181457.

The spelling of 13996531 in words is "thirteen million, nine hundred ninety-six thousand, five hundred thirty-one".