503223106213 has 4 divisors (see below), whose sum is σ = 532824465420. Its totient is φ = 473621747008.

The previous prime is 503223106039. The next prime is 503223106229. The reversal of 503223106213 is 312601322305.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312601322305 = 5 ⋅62520264461.

It can be written as a sum of positive squares in 2 ways, for example, as 258081272289 + 245141833924 = 508017^2 + 495118^2 .

It is a cyclic number.

It is not a de Polignac number, because 503223106213 - 2³³ = 494633171621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503223106273) 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, 14800679578 + ... + 14800679611.

It is an arithmetic number, because the mean of its divisors is an integer number (133206116355).

Almost surely, 2^503223106213 is an apocalyptic number.

It is an amenable number.

503223106213 is a deficient number, since it is larger than the sum of its proper divisors (29601359207).

503223106213 is a wasteful number, since it uses less digits than its factorization.

503223106213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29601359206.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 503223106213 its reverse (312601322305), we get a palindrome (815824428518).

The spelling of 503223106213 in words is "five hundred three billion, two hundred twenty-three million, one hundred six thousand, two hundred thirteen".