503231705243 has 4 divisors (see below), whose sum is σ = 507934805400. Its totient is φ = 498528605088.

The previous prime is 503231705239. The next prime is 503231705297. The reversal of 503231705243 is 342507132305.

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 503231705243 - 2² = 503231705239 is a prime.

It is a super-4 number, since 4×503231705243⁴ (a number of 48 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503231705213) 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, 2351549918 + ... + 2351550131.

It is an arithmetic number, because the mean of its divisors is an integer number (126983701350).

Almost surely, 2^503231705243 is an apocalyptic number.

503231705243 is a deficient number, since it is larger than the sum of its proper divisors (4703100157).

503231705243 is a wasteful number, since it uses less digits than its factorization.

503231705243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4703100156.

The product of its (nonzero) digits is 75600, while the sum is 35.

Adding to 503231705243 its reverse (342507132305), we get a palindrome (845738837548).

The spelling of 503231705243 in words is "five hundred three billion, two hundred thirty-one million, seven hundred five thousand, two hundred forty-three".