2271312 has 30 divisors (see below), whose sum is σ = 6356922. Its totient is φ = 757056.

The previous prime is 2271307. The next prime is 2271337. The reversal of 2271312 is 2131722.

It can be written as a sum of positive squares in only one way, i.e., 2005056 + 266256 = 1416^2 + 516^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7743 + ... + 8030.

2^2271312 is an apocalyptic number.

It is an amenable number.

2271312 is an abundant number, since it is smaller than the sum of its proper divisors (4085610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2271312 is a wasteful number, since it uses less digits than its factorization.

2271312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15787 (or 15778 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 2271312 is about 1507.0872569297. The cubic root of 2271312 is about 131.4494979731.

The spelling of 2271312 in words is "two million, two hundred seventy-one thousand, three hundred twelve".