211131431411 has 8 divisors (see below), whose sum is σ = 218756608224. Its totient is φ = 203607250560.

The previous prime is 211131431393. The next prime is 211131431431. The reversal of 211131431411 is 114134131112.

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-211131431411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211131431431) 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, 25244735 + ... + 25253096.

It is an arithmetic number, because the mean of its divisors is an integer number (27344576028).

Almost surely, 2^211131431411 is an apocalyptic number.

211131431411 is a deficient number, since it is larger than the sum of its proper divisors (7625176813).

211131431411 is a wasteful number, since it uses less digits than its factorization.

211131431411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50497981.

The product of its digits is 288, while the sum is 23.

Adding to 211131431411 its reverse (114134131112), we get a palindrome (325265562523).

The spelling of 211131431411 in words is "two hundred eleven billion, one hundred thirty-one million, four hundred thirty-one thousand, four hundred eleven".