505134313 has 4 divisors (see below), whose sum is σ = 507230548. Its totient is φ = 503038080.

The previous prime is 505134307. The next prime is 505134317. The reversal of 505134313 is 313431505.

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

It can be written as a sum of positive squares in 2 ways, for example, as 425514384 + 79619929 = 20628^2 + 8923^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505134313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505134317) 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, 1047756 + ... + 1048237.

It is an arithmetic number, because the mean of its divisors is an integer number (126807637).

Almost surely, 2^505134313 is an apocalyptic number.

It is an amenable number.

505134313 is a deficient number, since it is larger than the sum of its proper divisors (2096235).

505134313 is a wasteful number, since it uses less digits than its factorization.

505134313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096234.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 505134313 is about 22475.1932805927. The cubic root of 505134313 is about 796.4080175699.

Adding to 505134313 its reverse (313431505), we get a palindrome (818565818).

The spelling of 505134313 in words is "five hundred five million, one hundred thirty-four thousand, three hundred thirteen".