2271380281 has 3 divisors (see below), whose sum is σ = 2271427941. Its totient is φ = 2271332622.

The previous prime is 2271380269. The next prime is 2271380299. The reversal of 2271380281 is 1820831722.

The square root of 2271380281 is 47659.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1820831722 = 2 ⋅910415861.

It is not a de Polignac number, because 2271380281 - 2¹⁵ = 2271347513 is a prime.

It is a super-2 number, since 2×2271380281² = 10318336761831277922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2271380231) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23830 + ... + 71488.

It is an arithmetic number, because the mean of its divisors is an integer number (757142647).

Almost surely, 2^2271380281 is an apocalyptic number.

2271380281 is the 47659-th square number.

2271380281 is the 23830-th centered octagonal number.

It is an amenable number.

2271380281 is a deficient number, since it is larger than the sum of its proper divisors (47660).

2271380281 is an frugal number, since it uses more digits than its factorization.

2271380281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95318 (or 47659 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The cubic root of 2271380281 is about 1314.5081518727.

The spelling of 2271380281 in words is "two billion, two hundred seventy-one million, three hundred eighty thousand, two hundred eighty-one".