13249631 has 8 divisors (see below), whose sum is σ = 13983600. Its totient is φ = 12519360.

The previous prime is 13249609. The next prime is 13249657. The reversal of 13249631 is 13694231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13249631 is a prime.

It is a super-2 number, since 2×13249631² = 351105443272322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13249594 and 13249603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13249331) 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 7 ways as a sum of consecutive naturals, for example, 9635 + ... + 10923.

It is an arithmetic number, because the mean of its divisors is an integer number (1747950).

Almost surely, 2^13249631 is an apocalyptic number.

13249631 is a deficient number, since it is larger than the sum of its proper divisors (733969).

13249631 is a wasteful number, since it uses less digits than its factorization.

13249631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849.

The product of its digits is 3888, while the sum is 29.

The square root of 13249631 is about 3640.0042582393. The cubic root of 13249631 is about 236.6289778861.

The spelling of 13249631 in words is "thirteen million, two hundred forty-nine thousand, six hundred thirty-one".