211443230131 has 16 divisors (see below), whose sum is σ = 241996662208. Its totient is φ = 180976809600.

The previous prime is 211443230087. The next prime is 211443230147. The reversal of 211443230131 is 131032344112.

It is a cyclic number.

It is not a de Polignac number, because 211443230131 - 2⁹ = 211443229619 is a prime.

It is a super-3 number, since 3×211443230131³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 211443230096 and 211443230105.

It is not an unprimeable number, because it can be changed into a prime (211443230231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15795061 + ... + 15808441.

It is an arithmetic number, because the mean of its divisors is an integer number (15124791388).

Almost surely, 2^211443230131 is an apocalyptic number.

211443230131 is a deficient number, since it is larger than the sum of its proper divisors (30553432077).

211443230131 is a wasteful number, since it uses less digits than its factorization.

211443230131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16462.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 211443230131 its reverse (131032344112), we get a palindrome (342475574243).

The spelling of 211443230131 in words is "two hundred eleven billion, four hundred forty-three million, two hundred thirty thousand, one hundred thirty-one".