1315750313 has 4 divisors (see below), whose sum is σ = 1318720848. Its totient is φ = 1312779780.

The previous prime is 1315750273. The next prime is 1315750349. The reversal of 1315750313 is 3130575131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3130575131 = 41 ⋅76355491.

It is a cyclic number.

It is not a de Polignac number, because 1315750313 - 2¹² = 1315746217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315750363) 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, 1484603 + ... + 1485488.

It is an arithmetic number, because the mean of its divisors is an integer number (329680212).

Almost surely, 2^1315750313 is an apocalyptic number.

It is an amenable number.

1315750313 is a deficient number, since it is larger than the sum of its proper divisors (2970535).

1315750313 is an equidigital number, since it uses as much as digits as its factorization.

1315750313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970534.

The product of its (nonzero) digits is 4725, while the sum is 29.

The square root of 1315750313 is about 36273.2727087039. The cubic root of 1315750313 is about 1095.7828372664.

The spelling of 1315750313 in words is "one billion, three hundred fifteen million, seven hundred fifty thousand, three hundred thirteen".