503236113421 has 2 divisors, whose sum is σ = 503236113422. Its totient is φ = 503236113420.

The previous prime is 503236113407. The next prime is 503236113451. The reversal of 503236113421 is 124311632305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503177422500 + 58690921 = 709350^2 + 7661^2 .

It is a cyclic number.

It is not a de Polignac number, because 503236113421 - 2¹⁵ = 503236080653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503236113451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251618056710 + 251618056711.

It is an arithmetic number, because the mean of its divisors is an integer number (251618056711).

Almost surely, 2^503236113421 is an apocalyptic number.

It is an amenable number.

503236113421 is a deficient number, since it is larger than the sum of its proper divisors (1).

503236113421 is an equidigital number, since it uses as much as digits as its factorization.

503236113421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 503236113421 its reverse (124311632305), we get a palindrome (627547745726).

The spelling of 503236113421 in words is "five hundred three billion, two hundred thirty-six million, one hundred thirteen thousand, four hundred twenty-one".