213242321263 has 2 divisors, whose sum is σ = 213242321264. Its totient is φ = 213242321262.

The previous prime is 213242321093. The next prime is 213242321339. The reversal of 213242321263 is 362123242312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213242321263 - 2⁹ = 213242320751 is a prime.

It is a super-4 number, since 4×213242321263⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213242322263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106621160631 + 106621160632.

It is an arithmetic number, because the mean of its divisors is an integer number (106621160632).

Almost surely, 2^213242321263 is an apocalyptic number.

213242321263 is a deficient number, since it is larger than the sum of its proper divisors (1).

213242321263 is an equidigital number, since it uses as much as digits as its factorization.

213242321263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 31.

Adding to 213242321263 its reverse (362123242312), we get a palindrome (575365563575).

The spelling of 213242321263 in words is "two hundred thirteen billion, two hundred forty-two million, three hundred twenty-one thousand, two hundred sixty-three".