13214431 has 4 divisors (see below), whose sum is σ = 13251600. Its totient is φ = 13177264.

The previous prime is 13214429. The next prime is 13214447. The reversal of 13214431 is 13441231.

13214431 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13441231 = 827 ⋅16253.

It is a cyclic number.

It is not a de Polignac number, because 13214431 - 2¹ = 13214429 is a prime.

It is a super-2 number, since 2×13214431² = 349242373307522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13214399 and 13214408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13214471) 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, 18046 + ... + 18763.

It is an arithmetic number, because the mean of its divisors is an integer number (3312900).

Almost surely, 2^13214431 is an apocalyptic number.

13214431 is a deficient number, since it is larger than the sum of its proper divisors (37169).

13214431 is an equidigital number, since it uses as much as digits as its factorization.

13214431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37168.

The product of its digits is 288, while the sum is 19.

The square root of 13214431 is about 3635.1658834227. The cubic root of 13214431 is about 236.4192430628.

Adding to 13214431 its reverse (13441231), we get a palindrome (26655662).

The spelling of 13214431 in words is "thirteen million, two hundred fourteen thousand, four hundred thirty-one".