503442313 has 8 divisors (see below), whose sum is σ = 564053760. Its totient is φ = 445304880.

The previous prime is 503442299. The next prime is 503442337. The reversal of 503442313 is 313244305.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 503442313 - 2⁵ = 503442281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503442713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618073 + ... + 618886.

It is an arithmetic number, because the mean of its divisors is an integer number (70506720).

Almost surely, 2^503442313 is an apocalyptic number.

It is an amenable number.

503442313 is a deficient number, since it is larger than the sum of its proper divisors (60611447).

503442313 is a wasteful number, since it uses less digits than its factorization.

503442313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237007.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 503442313 is about 22437.5202061190. The cubic root of 503442313 is about 795.5178056714.

Adding to 503442313 its reverse (313244305), we get a palindrome (816686618).

The spelling of 503442313 in words is "five hundred three million, four hundred forty-two thousand, three hundred thirteen".