13396431 has 8 divisors (see below), whose sum is σ = 17930880. Its totient is φ = 8896472.

The previous prime is 13396421. The next prime is 13396447. The reversal of 13396431 is 13469331.

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 13396431 - 2⁶ = 13396367 is a prime.

It is a super-2 number, since 2×13396431² = 358928727075522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13396421) 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, 7701 + ... + 9278.

It is an arithmetic number, because the mean of its divisors is an integer number (2241360).

Almost surely, 2^13396431 is an apocalyptic number.

13396431 is a deficient number, since it is larger than the sum of its proper divisors (4534449).

13396431 is a wasteful number, since it uses less digits than its factorization.

13396431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17245.

The product of its digits is 5832, while the sum is 30.

The square root of 13396431 is about 3660.1135228296. The cubic root of 13396431 is about 237.4996845795.

Subtracting 13396431 from its reverse (13469331), we obtain a square (72900 = 270²).

The spelling of 13396431 in words is "thirteen million, three hundred ninety-six thousand, four hundred thirty-one".