503211206423 has 2 divisors, whose sum is σ = 503211206424. Its totient is φ = 503211206422.

The previous prime is 503211206401. The next prime is 503211206447. The reversal of 503211206423 is 324602112305.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 503211206423 - 2²⁴ = 503194429207 is a prime.

It is a super-2 number, since 2×503211206423² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503211206123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251605603211 + 251605603212.

It is an arithmetic number, because the mean of its divisors is an integer number (251605603212).

Almost surely, 2^503211206423 is an apocalyptic number.

503211206423 is a deficient number, since it is larger than the sum of its proper divisors (1).

503211206423 is an equidigital number, since it uses as much as digits as its factorization.

503211206423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 503211206423 its reverse (324602112305), we get a palindrome (827813318728).

The spelling of 503211206423 in words is "five hundred three billion, two hundred eleven million, two hundred six thousand, four hundred twenty-three".