13271431 has 4 divisors (see below), whose sum is σ = 13327200. Its totient is φ = 13215664.

The previous prime is 13271429. The next prime is 13271459. The reversal of 13271431 is 13417231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13417231 = 47 ⋅285473.

It is a cyclic number.

It is not a de Polignac number, because 13271431 - 2¹ = 13271429 is a prime.

It is a super-2 number, since 2×13271431² = 352261761575522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13271471) 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, 27526 + ... + 28003.

It is an arithmetic number, because the mean of its divisors is an integer number (3331800).

Almost surely, 2^13271431 is an apocalyptic number.

13271431 is a deficient number, since it is larger than the sum of its proper divisors (55769).

13271431 is an equidigital number, since it uses as much as digits as its factorization.

13271431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55768.

The product of its digits is 504, while the sum is 22.

The square root of 13271431 is about 3642.9975295078. The cubic root of 13271431 is about 236.7586842694.

Adding to 13271431 its reverse (13417231), we get a palindrome (26688662).

The spelling of 13271431 in words is "thirteen million, two hundred seventy-one thousand, four hundred thirty-one".