2271834309881 has 4 divisors (see below), whose sum is σ = 2271849250164. Its totient is φ = 2271819369600.

The previous prime is 2271834309863. The next prime is 2271834309883. The reversal of 2271834309881 is 1889034381722.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1042155139600 + 1229679170281 = 1020860^2 + 1108909^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2271834309881 is a prime.

It is a super-2 number, since 2×2271834309881² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2271834309883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7239680 + ... + 7546961.

It is an arithmetic number, because the mean of its divisors is an integer number (567962312541).

Almost surely, 2^{2271834309881} is an apocalyptic number.

It is an amenable number.

2271834309881 is a deficient number, since it is larger than the sum of its proper divisors (14940283).

2271834309881 is a wasteful number, since it uses less digits than its factorization.

2271834309881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14940282.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 2271834309881 in words is "two trillion, two hundred seventy-one billion, eight hundred thirty-four million, three hundred nine thousand, eight hundred eighty-one".