505130303 has 4 divisors (see below), whose sum is σ = 507952440. Its totient is φ = 502308168.

The previous prime is 505130293. The next prime is 505130321. The reversal of 505130303 is 303031505.

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

It is a cyclic number.

It is not a de Polignac number, because 505130303 - 2⁴ = 505130287 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 (505130363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1410800 + ... + 1411157.

It is an arithmetic number, because the mean of its divisors is an integer number (126988110).

Almost surely, 2^505130303 is an apocalyptic number.

505130303 is a deficient number, since it is larger than the sum of its proper divisors (2822137).

505130303 is a wasteful number, since it uses less digits than its factorization.

505130303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822136.

The product of its (nonzero) digits is 675, while the sum is 20.

The square root of 505130303 is about 22475.1040709493. The cubic root of 505130303 is about 796.4059101406.

Adding to 505130303 its reverse (303031505), we get a palindrome (808161808).

The spelling of 505130303 in words is "five hundred five million, one hundred thirty thousand, three hundred three".