513316313 has 4 divisors (see below), whose sum is σ = 515464320. Its totient is φ = 511168308.

The previous prime is 513316301. The next prime is 513316361. The reversal of 513316313 is 313613315.

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.

It is a cyclic number.

It is not a de Polignac number, because 513316313 - 2⁶ = 513316249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513316373) 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, 1073645 + ... + 1074122.

It is an arithmetic number, because the mean of its divisors is an integer number (128866080).

Almost surely, 2^513316313 is an apocalyptic number.

It is an amenable number.

513316313 is a deficient number, since it is larger than the sum of its proper divisors (2148007).

513316313 is a wasteful number, since it uses less digits than its factorization.

513316313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148006.

The product of its digits is 2430, while the sum is 26.

The square root of 513316313 is about 22656.4850098156. The cubic root of 513316313 is about 800.6849930008.

Adding to 513316313 its reverse (313613315), we get a palindrome (826929628).

The spelling of 513316313 in words is "five hundred thirteen million, three hundred sixteen thousand, three hundred thirteen".