12311265 has 16 divisors (see below), whose sum is σ = 19775808. Its totient is φ = 6540096.

The previous prime is 12311261. The next prime is 12311267. The reversal of 12311265 is 56211321.

It is not a de Polignac number, because 12311265 - 2² = 12311261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12311261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2674 + ... + 5636.

It is an arithmetic number, because the mean of its divisors is an integer number (1235988).

Almost surely, 2^12311265 is an apocalyptic number.

12311265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12311265 is a deficient number, since it is larger than the sum of its proper divisors (7464543).

12311265 is a wasteful number, since it uses less digits than its factorization.

12311265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248.

The product of its digits is 360, while the sum is 21.

The square root of 12311265 is about 3508.7412272780. The cubic root of 12311265 is about 230.9054728399.

Adding to 12311265 its reverse (56211321), we get a palindrome (68522586).

The spelling of 12311265 in words is "twelve million, three hundred eleven thousand, two hundred sixty-five".