211131434013111 has 12 divisors (see below), whose sum is σ = 305161750179000. Its totient is φ = 140664693986160.

The previous prime is 211131434013109. The next prime is 211131434013121. The reversal of 211131434013111 is 111310434131112.

211131434013111 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 3 + 1 + 4 + 340 + 1 + 311 + 1 = 666.

It is not a de Polignac number, because 211131434013111 - 2¹ = 211131434013109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211131434013121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7466264736 + ... + 7466293013.

It is an arithmetic number, because the mean of its divisors is an integer number (25430145848250).

Almost surely, 2^{211131434013111} is an apocalyptic number.

211131434013111 is a deficient number, since it is larger than the sum of its proper divisors (94030316165889).

211131434013111 is a wasteful number, since it uses less digits than its factorization.

211131434013111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14932559326 (or 14932559323 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

Adding to 211131434013111 its reverse (111310434131112), we get a palindrome (322441868144223).

The spelling of 211131434013111 in words is "two hundred eleven trillion, one hundred thirty-one billion, four hundred thirty-four million, thirteen thousand, one hundred eleven".