211434320023 has 2 divisors, whose sum is σ = 211434320024. Its totient is φ = 211434320022.

The previous prime is 211434320017. The next prime is 211434320051. The reversal of 211434320023 is 320023434112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211434320023 - 2¹⁷ = 211434188951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211434320023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211434360023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105717160011 + 105717160012.

It is an arithmetic number, because the mean of its divisors is an integer number (105717160012).

Almost surely, 2^211434320023 is an apocalyptic number.

211434320023 is a deficient number, since it is larger than the sum of its proper divisors (1).

211434320023 is an equidigital number, since it uses as much as digits as its factorization.

211434320023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 211434320023 its reverse (320023434112), we get a palindrome (531457754135).

The spelling of 211434320023 in words is "two hundred eleven billion, four hundred thirty-four million, three hundred twenty thousand, twenty-three".