211130031043 has 4 divisors (see below), whose sum is σ = 222242137960. Its totient is φ = 200017924128.

The previous prime is 211130030999. The next prime is 211130031083. The reversal of 211130031043 is 340130031112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211130031043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 11112106897 = 211130031043 / (2 + 1 + 1 + 1 + 3 + 0 + 0 + 3 + 1 + 0 + 4 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211130031043.

It is not an unprimeable number, because it can be changed into a prime (211130031083) 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 3 ways as a sum of consecutive naturals, for example, 5556053430 + ... + 5556053467.

It is an arithmetic number, because the mean of its divisors is an integer number (55560534490).

Almost surely, 2^211130031043 is an apocalyptic number.

211130031043 is a deficient number, since it is larger than the sum of its proper divisors (11112106917).

211130031043 is a wasteful number, since it uses less digits than its factorization.

211130031043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11112106916.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 211130031043 its reverse (340130031112), we get a palindrome (551260062155).

The spelling of 211130031043 in words is "two hundred eleven billion, one hundred thirty million, thirty-one thousand, forty-three".