213231320303 has 2 divisors, whose sum is σ = 213231320304. Its totient is φ = 213231320302.

The previous prime is 213231320257. The next prime is 213231320317. The reversal of 213231320303 is 303023132312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213231320303 - 2¹⁶ = 213231254767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213231340303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106615660151 + 106615660152.

It is an arithmetic number, because the mean of its divisors is an integer number (106615660152).

Almost surely, 2^213231320303 is an apocalyptic number.

213231320303 is a deficient number, since it is larger than the sum of its proper divisors (1).

213231320303 is an equidigital number, since it uses as much as digits as its factorization.

213231320303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 213231320303 its reverse (303023132312), we get a palindrome (516254452615).

The spelling of 213231320303 in words is "two hundred thirteen billion, two hundred thirty-one million, three hundred twenty thousand, three hundred three".