13631329 has 8 divisors (see below), whose sum is σ = 13927680. Its totient is φ = 13338336.

The previous prime is 13631323. The next prime is 13631347. The reversal of 13631329 is 92313631.

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 13631329 - 2⁹ = 13630817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13631297 and 13631306.

It is not an unprimeable number, because it can be changed into a prime (13631323) 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, 8424 + ... + 9910.

It is an arithmetic number, because the mean of its divisors is an integer number (1740960).

Almost surely, 2^13631329 is an apocalyptic number.

It is an amenable number.

13631329 is a deficient number, since it is larger than the sum of its proper divisors (296351).

13631329 is a wasteful number, since it uses less digits than its factorization.

13631329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679.

The product of its digits is 2916, while the sum is 28.

The square root of 13631329 is about 3692.0629734608. The cubic root of 13631329 is about 238.8797852509.

The spelling of 13631329 in words is "thirteen million, six hundred thirty-one thousand, three hundred twenty-nine".