2272323261 has 64 divisors (see below), whose sum is σ = 3443390720. Its totient is φ = 1323786240.

The previous prime is 2272323253. The next prime is 2272323283. The reversal of 2272323261 is 1623232722.

It is not a de Polignac number, because 2272323261 - 2³ = 2272323253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2272323161) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9922695 + ... + 9922923.

It is an arithmetic number, because the mean of its divisors is an integer number (53802980).

Almost surely, 2^2272323261 is an apocalyptic number.

It is an amenable number.

2272323261 is a deficient number, since it is larger than the sum of its proper divisors (1171067459).

2272323261 is a wasteful number, since it uses less digits than its factorization.

2272323261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446.

The product of its digits is 12096, while the sum is 30.

The square root of 2272323261 is about 47668.8919632080. The cubic root of 2272323261 is about 1314.6900359030.

Adding to 2272323261 its reverse (1623232722), we get a palindrome (3895555983).

The spelling of 2272323261 in words is "two billion, two hundred seventy-two million, three hundred twenty-three thousand, two hundred sixty-one".