13227731 has 8 divisors (see below), whose sum is σ = 14896128. Its totient is φ = 11637000.

The previous prime is 13227719. The next prime is 13227749. The reversal of 13227731 is 13772231.

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 13227731 - 2¹⁴ = 13211347 is a prime.

It is a super-2 number, since 2×13227731² = 349945734816722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13227731.

It is not an unprimeable number, because it can be changed into a prime (13227701) 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, 19055 + ... + 19736.

It is an arithmetic number, because the mean of its divisors is an integer number (1862016).

Almost surely, 2^13227731 is an apocalyptic number.

13227731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13227731 is a deficient number, since it is larger than the sum of its proper divisors (1668397).

13227731 is a wasteful number, since it uses less digits than its factorization.

13227731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38833.

The product of its digits is 1764, while the sum is 26.

The square root of 13227731 is about 3636.9947759105. The cubic root of 13227731 is about 236.4985331866.

Adding to 13227731 its reverse (13772231), we get a palindrome (26999962).

The spelling of 13227731 in words is "thirteen million, two hundred twenty-seven thousand, seven hundred thirty-one".