13613431 has 8 divisors (see below), whose sum is σ = 14901824. Its totient is φ = 12359520.

The previous prime is 13613429. The next prime is 13613437. The reversal of 13613431 is 13431631.

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 13613431 - 2¹ = 13613429 is a prime.

It is a super-2 number, since 2×13613431² = 370651007183522, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13613437) 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, 7791 + ... + 9376.

It is an arithmetic number, because the mean of its divisors is an integer number (1862728).

Almost surely, 2^13613431 is an apocalyptic number.

13613431 is a deficient number, since it is larger than the sum of its proper divisors (1288393).

13613431 is a wasteful number, since it uses less digits than its factorization.

13613431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17241.

The product of its digits is 648, while the sum is 22.

The square root of 13613431 is about 3689.6383291591. The cubic root of 13613431 is about 238.7751893601.

The spelling of 13613431 in words is "thirteen million, six hundred thirteen thousand, four hundred thirty-one".