211054533531311 has 4 divisors (see below), whose sum is σ = 211194212244624. Its totient is φ = 210914854818000.

The previous prime is 211054533531253. The next prime is 211054533531319. The reversal of 211054533531311 is 113135335450112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211054533531311 - 2¹⁰ = 211054533530287 is a prime.

It is a super-2 number, since 2×211054533531311² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211054533531319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (37) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69839354390 + ... + 69839357411.

It is an arithmetic number, because the mean of its divisors is an integer number (52798553061156).

Almost surely, 2^{211054533531311} is an apocalyptic number.

211054533531311 is a deficient number, since it is larger than the sum of its proper divisors (139678713313).

211054533531311 is a wasteful number, since it uses less digits than its factorization.

211054533531311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139678713312.

The product of its (nonzero) digits is 81000, while the sum is 38.

Adding to 211054533531311 its reverse (113135335450112), we get a palindrome (324189868981423).

The spelling of 211054533531311 in words is "two hundred eleven trillion, fifty-four billion, five hundred thirty-three million, five hundred thirty-one thousand, three hundred eleven".