211304434423 has 2 divisors, whose sum is σ = 211304434424. Its totient is φ = 211304434422.

The previous prime is 211304434417. The next prime is 211304434501. The reversal of 211304434423 is 324434403112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211304434423 - 2¹³ = 211304426231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211304734423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105652217211 + 105652217212.

It is an arithmetic number, because the mean of its divisors is an integer number (105652217212).

Almost surely, 2^211304434423 is an apocalyptic number.

211304434423 is a deficient number, since it is larger than the sum of its proper divisors (1).

211304434423 is an equidigital number, since it uses as much as digits as its factorization.

211304434423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 211304434423 its reverse (324434403112), we get a palindrome (535738837535).

The spelling of 211304434423 in words is "two hundred eleven billion, three hundred four million, four hundred thirty-four thousand, four hundred twenty-three".