503145313044431 has 4 divisors (see below), whose sum is σ = 503196922995000. Its totient is φ = 503093703093864.

The previous prime is 503145313044373. The next prime is 503145313044449. The reversal of 503145313044431 is 134440313541305.

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 503145313044431 - 2³⁸ = 502870435137487 is a prime.

It is a super-2 number, since 2×503145313044431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503145313074431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25804960661 + ... + 25804980158.

It is an arithmetic number, because the mean of its divisors is an integer number (125799230748750).

Almost surely, 2^{503145313044431} is an apocalyptic number.

503145313044431 is a deficient number, since it is larger than the sum of its proper divisors (51609950569).

503145313044431 is an equidigital number, since it uses as much as digits as its factorization.

503145313044431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51609950568.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 503145313044431 its reverse (134440313541305), we get a palindrome (637585626585736).

The spelling of 503145313044431 in words is "five hundred three trillion, one hundred forty-five billion, three hundred thirteen million, forty-four thousand, four hundred thirty-one".