13531117 has 4 divisors (see below), whose sum is σ = 13539456. Its totient is φ = 13522780.

The previous prime is 13531103. The next prime is 13531123. The reversal of 13531117 is 71113531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13531117 - 2⁷ = 13530989 is a prime.

It is a super-2 number, since 2×13531117² = 366182254535378, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859 + ... + 5272.

It is an arithmetic number, because the mean of its divisors is an integer number (3384864).

Almost surely, 2^13531117 is an apocalyptic number.

It is an amenable number.

13531117 is a deficient number, since it is larger than the sum of its proper divisors (8339).

13531117 is an equidigital number, since it uses as much as digits as its factorization.

13531117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8338.

The product of its digits is 315, while the sum is 22.

The square root of 13531117 is about 3678.4666642502. The cubic root of 13531117 is about 238.2929624460.

Adding to 13531117 its reverse (71113531), we get a palindrome (84644648).

The spelling of 13531117 in words is "thirteen million, five hundred thirty-one thousand, one hundred seventeen".