13227481 has 4 divisors (see below), whose sum is σ = 13235764. Its totient is φ = 13219200.

The previous prime is 13227457. The next prime is 13227491. The reversal of 13227481 is 18472231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18472231 = 83 ⋅222557.

It can be written as a sum of positive squares in 2 ways, for example, as 4583881 + 8643600 = 2141^2 + 2940^2 .

It is a cyclic number.

It is not a de Polignac number, because 13227481 - 2⁷ = 13227353 is a prime.

It is a super-2 number, since 2×13227481² = 349932507210722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13227491) 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, 900 + ... + 5221.

It is an arithmetic number, because the mean of its divisors is an integer number (3308941).

Almost surely, 2^13227481 is an apocalyptic number.

It is an amenable number.

13227481 is a deficient number, since it is larger than the sum of its proper divisors (8283).

13227481 is an equidigital number, since it uses as much as digits as its factorization.

13227481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8282.

The product of its digits is 2688, while the sum is 28.

The square root of 13227481 is about 3636.9604067133. The cubic root of 13227481 is about 236.4970432610.

It can be divided in two parts, 132274 and 81, that added together give a triangular number (132355 = T₅₁₄).

The spelling of 13227481 in words is "thirteen million, two hundred twenty-seven thousand, four hundred eighty-one".