503040522331 has 4 divisors (see below), whose sum is σ = 508021121664. Its totient is φ = 498059923000.

The previous prime is 503040522329. The next prime is 503040522409. The reversal of 503040522331 is 133225040305.

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 503040522331 - 2¹ = 503040522329 is a prime.

It is a super-2 number, since 2×503040522331² (a number of 24 digits) contains 22 as substring.

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 503040522331.

It is not an unprimeable number, because it can be changed into a prime (503040522301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2490299515 + ... + 2490299716.

It is an arithmetic number, because the mean of its divisors is an integer number (127005280416).

Almost surely, 2^503040522331 is an apocalyptic number.

503040522331 is a deficient number, since it is larger than the sum of its proper divisors (4980599333).

503040522331 is a wasteful number, since it uses less digits than its factorization.

503040522331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4980599332.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 503040522331 its reverse (133225040305), we get a palindrome (636265562636).

The spelling of 503040522331 in words is "five hundred three billion, forty million, five hundred twenty-two thousand, three hundred thirty-one".