13008531 has 8 divisors (see below), whose sum is σ = 17418240. Its totient is φ = 8635592.

The previous prime is 13008517. The next prime is 13008539. The reversal of 13008531 is 13580031.

It is a happy number.

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 13008531 - 2⁹ = 13008019 is a prime.

It is a super-2 number, since 2×13008531² = 338443757555922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13008498 and 13008507.

It is not an unprimeable number, because it can be changed into a prime (13008539) 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, 8355 + ... + 9788.

It is an arithmetic number, because the mean of its divisors is an integer number (2177280).

Almost surely, 2^13008531 is an apocalyptic number.

13008531 is a deficient number, since it is larger than the sum of its proper divisors (4409709).

13008531 is a wasteful number, since it uses less digits than its factorization.

13008531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18385.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 13008531 is about 3606.7341182849. The cubic root of 13008531 is about 235.1848914644.

Adding to 13008531 its reverse (13580031), we get a palindrome (26588562).

The spelling of 13008531 in words is "thirteen million, eight thousand, five hundred thirty-one".