1312301513 has 4 divisors (see below), whose sum is σ = 1318963140. Its totient is φ = 1305639888.

The previous prime is 1312301489. The next prime is 1312301537. The reversal of 1312301513 is 3151032131.

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

It is an interprime number because it is at equal distance from previous prime (1312301489) and next prime (1312301537).

It can be written as a sum of positive squares in 2 ways, for example, as 960814009 + 351487504 = 30997^2 + 18748^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312301513 - 2¹⁸ = 1312039369 is a prime.

It is a super-2 number, since 2×1312301513² = 3444270522044178338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312300513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3330518 + ... + 3330911.

It is an arithmetic number, because the mean of its divisors is an integer number (329740785).

Almost surely, 2^1312301513 is an apocalyptic number.

It is an amenable number.

1312301513 is a deficient number, since it is larger than the sum of its proper divisors (6661627).

1312301513 is an equidigital number, since it uses as much as digits as its factorization.

1312301513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6661626.

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

The square root of 1312301513 is about 36225.7023810443. The cubic root of 1312301513 is about 1094.8245899600.

Adding to 1312301513 its reverse (3151032131), we get a palindrome (4463333644).

The spelling of 1312301513 in words is "one billion, three hundred twelve million, three hundred one thousand, five hundred thirteen".