1305313 has 4 divisors (see below), whose sum is σ = 1323268. Its totient is φ = 1287360.

The previous prime is 1305307. The next prime is 1305371. The reversal of 1305313 is 3135031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 613089 + 692224 = 783^2 + 832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1305313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1305373) 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, 8868 + ... + 9013.

It is an arithmetic number, because the mean of its divisors is an integer number (330817).

2^1305313 is an apocalyptic number.

It is an amenable number.

1305313 is a deficient number, since it is larger than the sum of its proper divisors (17955).

1305313 is an equidigital number, since it uses as much as digits as its factorization.

1305313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17954.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 1305313 is about 1142.5029540443. The cubic root of 1305313 is about 109.2877675071.

The spelling of 1305313 in words is "one million, three hundred five thousand, three hundred thirteen".