2271360881 has 4 divisors (see below), whose sum is σ = 2349683700. Its totient is φ = 2193038064.

The previous prime is 2271360859. The next prime is 2271360899. The reversal of 2271360881 is 1880631722.

2271360881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1955054656 + 316306225 = 44216^2 + 17785^2 .

It is a cyclic number.

It is not a de Polignac number, because 2271360881 - 2³⁰ = 1197619057 is a prime.

It is a super-2 number, since 2×2271360881² = 10318160503474192322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2271360811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39161366 + ... + 39161423.

It is an arithmetic number, because the mean of its divisors is an integer number (587420925).

Almost surely, 2^2271360881 is an apocalyptic number.

It is an amenable number.

2271360881 is a deficient number, since it is larger than the sum of its proper divisors (78322819).

2271360881 is an equidigital number, since it uses as much as digits as its factorization.

2271360881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78322818.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 2271360881 is about 47658.7964703264. The cubic root of 2271360881 is about 1314.5044094301.

The spelling of 2271360881 in words is "two billion, two hundred seventy-one million, three hundred sixty thousand, eight hundred eighty-one".