501043403431 has 12 divisors (see below), whose sum is σ = 519208151800. Its totient is φ = 483494181408.

The previous prime is 501043403411. The next prime is 501043403437. The reversal of 501043403431 is 134304340105.

It is not a de Polignac number, because 501043403431 - 2⁹ = 501043402919 is a prime.

It is a super-3 number, since 3×501043403431³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 501043403431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501043403437) 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 11 ways as a sum of consecutive naturals, for example, 1338040 + ... + 1671058.

Almost surely, 2^501043403431 is an apocalyptic number.

501043403431 is a deficient number, since it is larger than the sum of its proper divisors (18164748369).

501043403431 is a wasteful number, since it uses less digits than its factorization.

501043403431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334866 (or 334837 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 501043403431 its reverse (134304340105), we get a palindrome (635347743536).

The spelling of 501043403431 in words is "five hundred one billion, forty-three million, four hundred three thousand, four hundred thirty-one".