213420231423323 has 2 divisors, whose sum is σ = 213420231423324. Its totient is φ = 213420231423322.

The previous prime is 213420231423317. The next prime is 213420231423361. The reversal of 213420231423323 is 323324132024312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213420231423323 - 2⁸ = 213420231423067 is a prime.

It is not a weakly prime, because it can be changed into another prime (213420231423023) 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, 106710115711661 + 106710115711662.

It is an arithmetic number, because the mean of its divisors is an integer number (106710115711662).

Almost surely, 2^{213420231423323} is an apocalyptic number.

213420231423323 is a deficient number, since it is larger than the sum of its proper divisors (1).

213420231423323 is an equidigital number, since it uses as much as digits as its factorization.

213420231423323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 213420231423323 its reverse (323324132024312), we get a palindrome (536744363447635).

The spelling of 213420231423323 in words is "two hundred thirteen trillion, four hundred twenty billion, two hundred thirty-one million, four hundred twenty-three thousand, three hundred twenty-three".