503261302313 has 32 divisors (see below), whose sum is σ = 628459732992. Its totient is φ = 391516675200.

The previous prime is 503261302277. The next prime is 503261302367. The reversal of 503261302313 is 313203162305.

It is a de Polignac number, because none of the positive numbers 2^k-503261302313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (503261302813) 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 31 ways as a sum of consecutive naturals, for example, 220630733 + ... + 220633013.

It is an arithmetic number, because the mean of its divisors is an integer number (19639366656).

Almost surely, 2^503261302313 is an apocalyptic number.

It is an amenable number.

503261302313 is a deficient number, since it is larger than the sum of its proper divisors (125198430679).

503261302313 is a wasteful number, since it uses less digits than its factorization.

503261302313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5685.

The product of its (nonzero) digits is 9720, while the sum is 29.

Adding to 503261302313 its reverse (313203162305), we get a palindrome (816464464618).

The spelling of 503261302313 in words is "five hundred three billion, two hundred sixty-one million, three hundred two thousand, three hundred thirteen".