211319811344 has 20 divisors (see below), whose sum is σ = 411220054860. Its totient is φ = 105198506880.

The previous prime is 211319811343. The next prime is 211319811371. The reversal of 211319811344 is 443118913112.

It can be written as a sum of positive squares in 2 ways, for example, as 173815615744 + 37504195600 = 416912^2 + 193660^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211319811298 and 211319811307.

It is not an unprimeable number, because it can be changed into a prime (211319811343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28833647 + ... + 28840974.

It is an arithmetic number, because the mean of its divisors is an integer number (20561002743).

Almost surely, 2^211319811344 is an apocalyptic number.

It is an amenable number.

211319811344 is a deficient number, since it is larger than the sum of its proper divisors (199900243516).

211319811344 is a wasteful number, since it uses less digits than its factorization.

211319811344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57674858 (or 57674852 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The spelling of 211319811344 in words is "two hundred eleven billion, three hundred nineteen million, eight hundred eleven thousand, three hundred forty-four".