213450423311 has 2 divisors, whose sum is σ = 213450423312. Its totient is φ = 213450423310.

The previous prime is 213450423293. The next prime is 213450423313. The reversal of 213450423311 is 113324054312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213450423311 is a prime.

It is a super-2 number, since 2×213450423311² (a number of 23 digits) contains 22 as substring.

Together with 213450423313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213450423313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106725211655 + 106725211656.

It is an arithmetic number, because the mean of its divisors is an integer number (106725211656).

Almost surely, 2^213450423311 is an apocalyptic number.

213450423311 is a deficient number, since it is larger than the sum of its proper divisors (1).

213450423311 is an equidigital number, since it uses as much as digits as its factorization.

213450423311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 213450423311 its reverse (113324054312), we get a palindrome (326774477623).

The spelling of 213450423311 in words is "two hundred thirteen billion, four hundred fifty million, four hundred twenty-three thousand, three hundred eleven".