211131440443 has 24 divisors (see below), whose sum is σ = 271928314944. Its totient is φ = 162062485200.

The previous prime is 211131440423. The next prime is 211131440459. The reversal of 211131440443 is 344044131112.

It is not a de Polignac number, because 211131440443 - 2⁵ = 211131440411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211131440423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2887093 + ... + 2959318.

It is an arithmetic number, because the mean of its divisors is an integer number (11330346456).

Almost surely, 2^211131440443 is an apocalyptic number.

211131440443 is a deficient number, since it is larger than the sum of its proper divisors (60796874501).

211131440443 is a wasteful number, since it uses less digits than its factorization.

211131440443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5846503 (or 5846496 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 211131440443 its reverse (344044131112), we get a palindrome (555175571555).

The spelling of 211131440443 in words is "two hundred eleven billion, one hundred thirty-one million, four hundred forty thousand, four hundred forty-three".