13694431 has 4 divisors (see below), whose sum is σ = 13926600. Its totient is φ = 13462264.

The previous prime is 13694423. The next prime is 13694449. The reversal of 13694431 is 13449631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13694431 - 2³ = 13694423 is a prime.

It is a super-2 number, since 2×13694431² = 375074880827522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13694393 and 13694402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13694831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115996 + ... + 116113.

It is an arithmetic number, because the mean of its divisors is an integer number (3481650).

Almost surely, 2^13694431 is an apocalyptic number.

13694431 is a deficient number, since it is larger than the sum of its proper divisors (232169).

13694431 is an equidigital number, since it uses as much as digits as its factorization.

13694431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232168.

The product of its digits is 7776, while the sum is 31.

The square root of 13694431 is about 3700.5987353400. The cubic root of 13694431 is about 239.2478244942.

The spelling of 13694431 in words is "thirteen million, six hundred ninety-four thousand, four hundred thirty-one".