13678431 has 8 divisors (see below), whose sum is σ = 19640880. Its totient is φ = 8417472.

The previous prime is 13678417. The next prime is 13678433. The reversal of 13678431 is 13487631.

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

It is not a de Polignac number, because 13678431 - 2⁹ = 13677919 is a prime.

It is a super-2 number, since 2×13678431² = 374198949243522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 13678392 and 13678401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13678433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175326 + ... + 175403.

It is an arithmetic number, because the mean of its divisors is an integer number (2455110).

Almost surely, 2^13678431 is an apocalyptic number.

13678431 is a deficient number, since it is larger than the sum of its proper divisors (5962449).

13678431 is a wasteful number, since it uses less digits than its factorization.

13678431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350745.

The product of its digits is 12096, while the sum is 33.

The square root of 13678431 is about 3698.4362911912. The cubic root of 13678431 is about 239.1546124683.

The spelling of 13678431 in words is "thirteen million, six hundred seventy-eight thousand, four hundred thirty-one".