13089631 has 8 divisors (see below), whose sum is σ = 13405824. Its totient is φ = 12777240.

The previous prime is 13089617. The next prime is 13089647. The reversal of 13089631 is 13698031.

13089631 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13089631 - 2¹¹ = 13087583 is a prime.

It is a super-2 number, since 2×13089631² = 342676879432322, 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 = 13089593 and 13089602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13089611) 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 7 ways as a sum of consecutive naturals, for example, 6736 + ... + 8458.

It is an arithmetic number, because the mean of its divisors is an integer number (1675728).

Almost surely, 2^13089631 is an apocalyptic number.

13089631 is a deficient number, since it is larger than the sum of its proper divisors (316193).

13089631 is a wasteful number, since it uses less digits than its factorization.

13089631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 13089631 is about 3617.9595077889. The cubic root of 13089631 is about 235.6726225371.

Subtracting 13089631 from its reverse (13698031), we obtain a square (608400 = 780²).

The spelling of 13089631 in words is "thirteen million, eighty-nine thousand, six hundred thirty-one".