13731265 has 8 divisors (see below), whose sum is σ = 16507008. Its totient is φ = 10965360.

The previous prime is 13731259. The next prime is 13731287. The reversal of 13731265 is 56213731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13731265 - 2¹⁷ = 13600193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1080 + ... + 5350.

It is an arithmetic number, because the mean of its divisors is an integer number (2063376).

Almost surely, 2^13731265 is an apocalyptic number.

It is an amenable number.

13731265 is a deficient number, since it is larger than the sum of its proper divisors (2775743).

13731265 is an equidigital number, since it uses as much as digits as its factorization.

13731265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919.

The product of its digits is 3780, while the sum is 28.

The square root of 13731265 is about 3705.5721555517. The cubic root of 13731265 is about 239.4621346076.

Adding to 13731265 its reverse (56213731), we get a palindrome (69944996).

The spelling of 13731265 in words is "thirteen million, seven hundred thirty-one thousand, two hundred sixty-five".