1315053813 has 4 divisors (see below), whose sum is σ = 1753405088. Its totient is φ = 876702540.

The previous prime is 1315053769. The next prime is 1315053833. The reversal of 1315053813 is 3183505131.

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.

It is not a de Polignac number, because 1315053813 - 2¹³ = 1315045621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315053833) 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, 219175633 + ... + 219175638.

It is an arithmetic number, because the mean of its divisors is an integer number (438351272).

Almost surely, 2^1315053813 is an apocalyptic number.

It is an amenable number.

1315053813 is a deficient number, since it is larger than the sum of its proper divisors (438351275).

1315053813 is an equidigital number, since it uses as much as digits as its factorization.

1315053813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438351274.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1315053813 is about 36263.6707049907. The cubic root of 1315053813 is about 1095.5894501552.

Adding to 1315053813 its reverse (3183505131), we get a palindrome (4498558944).

The spelling of 1315053813 in words is "one billion, three hundred fifteen million, fifty-three thousand, eight hundred thirteen".