503430442631 has 4 divisors (see below), whose sum is σ = 503442210432. Its totient is φ = 503418674832.

The previous prime is 503430442621. The next prime is 503430442637. The reversal of 503430442631 is 136244034305.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503430442631 is a prime.

It is a super-2 number, since 2×503430442631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 503430442591 and 503430442600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503430442637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5819495 + ... + 5905368.

It is an arithmetic number, because the mean of its divisors is an integer number (125860552608).

Almost surely, 2^503430442631 is an apocalyptic number.

503430442631 is a deficient number, since it is larger than the sum of its proper divisors (11767801).

503430442631 is a wasteful number, since it uses less digits than its factorization.

503430442631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11767800.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 503430442631 its reverse (136244034305), we get a palindrome (639674476936).

The spelling of 503430442631 in words is "five hundred three billion, four hundred thirty million, four hundred forty-two thousand, six hundred thirty-one".