8211032991 has 16 divisors (see below), whose sum is σ = 13902278400. Its totient is φ = 4692018744.

The previous prime is 8211032987. The next prime is 8211032993. The reversal of 8211032991 is 1992301128.

It is not a de Polignac number, because 8211032991 - 2² = 8211032987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8211032993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21722121 + ... + 21722498.

It is an arithmetic number, because the mean of its divisors is an integer number (868892400).

Almost surely, 2^8211032991 is an apocalyptic number.

8211032991 is a deficient number, since it is larger than the sum of its proper divisors (5691245409).

8211032991 is a wasteful number, since it uses less digits than its factorization.

8211032991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43444635 (or 43444629 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 8211032991 is about 90614.7504052182. The cubic root of 8211032991 is about 2017.4336745239.

The spelling of 8211032991 in words is "eight billion, two hundred eleven million, thirty-two thousand, nine hundred ninety-one".