2271331361 has 4 divisors (see below), whose sum is σ = 2446049172. Its totient is φ = 2096613552.

The previous prime is 2271331303. The next prime is 2271331367. The reversal of 2271331361 is 1631331722.

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 297217600 + 1974113761 = 17240^2 + 44431^2 .

It is a cyclic number.

It is not a de Polignac number, because 2271331361 - 2⁶ = 2271331297 is a prime.

It is a super-2 number, since 2×2271331361² = 10317892302924224642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2271331367) 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, 87358886 + ... + 87358911.

It is an arithmetic number, because the mean of its divisors is an integer number (611512293).

Almost surely, 2^2271331361 is an apocalyptic number.

It is an amenable number.

2271331361 is a deficient number, since it is larger than the sum of its proper divisors (174717811).

2271331361 is a wasteful number, since it uses less digits than its factorization.

2271331361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174717810.

The product of its digits is 4536, while the sum is 29.

The square root of 2271331361 is about 47658.4867678360. The cubic root of 2271331361 is about 1314.4987147034.

The spelling of 2271331361 in words is "two billion, two hundred seventy-one million, three hundred thirty-one thousand, three hundred sixty-one".