13660431 has 8 divisors (see below), whose sum is σ = 18232704. Its totient is φ = 9097560.

The previous prime is 13660403. The next prime is 13660441. The reversal of 13660431 is 13406631.

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

It is not a de Polignac number, because 13660431 - 2⁵ = 13660399 is a prime.

It is a super-2 number, since 2×13660431² = 373214750211522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13660441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2436 + ... + 5766.

It is an arithmetic number, because the mean of its divisors is an integer number (2279088).

Almost surely, 2^13660431 is an apocalyptic number.

13660431 is a deficient number, since it is larger than the sum of its proper divisors (4572273).

13660431 is a wasteful number, since it uses less digits than its factorization.

13660431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4701.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 13660431 is about 3696.0020292202. The cubic root of 13660431 is about 239.0496620130.

The spelling of 13660431 in words is "thirteen million, six hundred sixty thousand, four hundred thirty-one".