1165313 has 4 divisors (see below), whose sum is σ = 1167828. Its totient is φ = 1162800.

The previous prime is 1165303. The next prime is 1165349. The reversal of 1165313 is 3135611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3135611 = 1451 ⋅2161.

It can be written as a sum of positive squares in 2 ways, for example, as 35344 + 1129969 = 188^2 + 1063^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165313 - 2⁸ = 1165057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165303) 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, 338 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (291957).

It is a Proth number, since it is equal to 569 ⋅ 2¹¹ + 1 and 569 < 2¹¹.

2^1165313 is an apocalyptic number.

It is an amenable number.

1165313 is a deficient number, since it is larger than the sum of its proper divisors (2515).

1165313 is an equidigital number, since it uses as much as digits as its factorization.

1165313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514.

The product of its digits is 270, while the sum is 20.

The square root of 1165313 is about 1079.4966419586. The cubic root of 1165313 is about 105.2319287491.

The spelling of 1165313 in words is "one million, one hundred sixty-five thousand, three hundred thirteen".