1265313 has 16 divisors (see below), whose sum is σ = 1952640. Its totient is φ = 713856.

The previous prime is 1265311. The next prime is 1265321. The reversal of 1265313 is 3135621.

It is not a de Polignac number, because 1265313 - 2¹ = 1265311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1265313.

It is not an unprimeable number, because it can be changed into a prime (1265311) 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, 1531 + ... + 2207.

It is an arithmetic number, because the mean of its divisors is an integer number (122040).

2^1265313 is an apocalyptic number.

It is an amenable number.

1265313 is a deficient number, since it is larger than the sum of its proper divisors (687327).

1265313 is an equidigital number, since it uses as much as digits as its factorization.

1265313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776.

The product of its digits is 540, while the sum is 21.

The square root of 1265313 is about 1124.8613247863. The cubic root of 1265313 is about 108.1598285119.

The spelling of 1265313 in words is "one million, two hundred sixty-five thousand, three hundred thirteen".