2181314243 has 8 divisors (see below), whose sum is σ = 2273708112. Its totient is φ = 2090680416.

The previous prime is 2181314237. The next prime is 2181314263. The reversal of 2181314243 is 3424131812.

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 2181314243 - 2⁸ = 2181313987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2181314203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437480 + ... + 442437.

It is an arithmetic number, because the mean of its divisors is an integer number (284213514).

Almost surely, 2^2181314243 is an apocalyptic number.

2181314243 is a deficient number, since it is larger than the sum of its proper divisors (92393869).

2181314243 is an equidigital number, since it uses as much as digits as its factorization.

2181314243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880021.

The product of its digits is 4608, while the sum is 29.

The square root of 2181314243 is about 46704.5419953991. The cubic root of 2181314243 is about 1296.8987700355.

The spelling of 2181314243 in words is "two billion, one hundred eighty-one million, three hundred fourteen thousand, two hundred forty-three".