2181343227 has 16 divisors (see below), whose sum is σ = 3336225792. Its totient is φ = 1241879040.

The previous prime is 2181343193. The next prime is 2181343231. The reversal of 2181343227 is 7223431812.

It is not a de Polignac number, because 2181343227 - 2¹⁰ = 2181342203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2181343267) 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, 185958 + ... + 197339.

It is an arithmetic number, because the mean of its divisors is an integer number (208514112).

Almost surely, 2^2181343227 is an apocalyptic number.

2181343227 is a deficient number, since it is larger than the sum of its proper divisors (1154882565).

2181343227 is a wasteful number, since it uses less digits than its factorization.

2181343227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383578.

The product of its digits is 16128, while the sum is 33.

The square root of 2181343227 is about 46704.8522853889. The cubic root of 2181343227 is about 1296.9045141487.

The spelling of 2181343227 in words is "two billion, one hundred eighty-one million, three hundred forty-three thousand, two hundred twenty-seven".