211243004131 has 8 divisors (see below), whose sum is σ = 222580584720. Its totient is φ = 199927376352.

The previous prime is 211243004123. The next prime is 211243004179. The reversal of 211243004131 is 131400342112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211243004131 - 2³ = 211243004123 is a prime.

It is a super-2 number, since 2×211243004131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211243004101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5468440 + ... + 5506933.

It is an arithmetic number, because the mean of its divisors is an integer number (27822573090).

Almost surely, 2^211243004131 is an apocalyptic number.

211243004131 is a deficient number, since it is larger than the sum of its proper divisors (11337580589).

211243004131 is a wasteful number, since it uses less digits than its factorization.

211243004131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10976405.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 211243004131 its reverse (131400342112), we get a palindrome (342643346243).

The spelling of 211243004131 in words is "two hundred eleven billion, two hundred forty-three million, four thousand, one hundred thirty-one".