211130030987 has 4 divisors (see below), whose sum is σ = 211136383200. Its totient is φ = 211123678776.

The previous prime is 211130030957. The next prime is 211130030999. The reversal of 211130030987 is 789030031112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 211130030987 - 2¹⁴ = 211130014603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211130030927) 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, 3125987 + ... + 3192812.

It is an arithmetic number, because the mean of its divisors is an integer number (52784095800).

Almost surely, 2^211130030987 is an apocalyptic number.

211130030987 is a deficient number, since it is larger than the sum of its proper divisors (6352213).

211130030987 is an equidigital number, since it uses as much as digits as its factorization.

211130030987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6352212.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 211130030987 in words is "two hundred eleven billion, one hundred thirty million, thirty thousand, nine hundred eighty-seven".