211305424251311 has 8 divisors (see below), whose sum is σ = 227804638892880. Its totient is φ = 194841202643712.

The previous prime is 211305424251269. The next prime is 211305424251349. The reversal of 211305424251311 is 113152424503112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211305424251311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211305424251391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8748245945 + ... + 8748270098.

It is an arithmetic number, because the mean of its divisors is an integer number (28475579861610).

Almost surely, 2^{211305424251311} is an apocalyptic number.

211305424251311 is a deficient number, since it is larger than the sum of its proper divisors (16499214641569).

211305424251311 is a wasteful number, since it uses less digits than its factorization.

211305424251311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17496516985.

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 211305424251311 its reverse (113152424503112), we get a palindrome (324457848754423).

The spelling of 211305424251311 in words is "two hundred eleven trillion, three hundred five billion, four hundred twenty-four million, two hundred fifty-one thousand, three hundred eleven".