2291277312 has 60 divisors (see below), whose sum is σ = 6612794760. Its totient is φ = 763757568.

The previous prime is 2291277299. The next prime is 2291277341. The reversal of 2291277312 is 2137721922.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 244012 + ... + 253227.

It is an arithmetic number, because the mean of its divisors is an integer number (110213246).

Almost surely, 2^2291277312 is an apocalyptic number.

It is an amenable number.

2291277312 is an abundant number, since it is smaller than the sum of its proper divisors (4321517448).

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

2291277312 is an equidigital number, since it uses as much as digits as its factorization.

2291277312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497263 (or 497244 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 2291277312 is about 47867.2885382074. The cubic root of 2291277312 is about 1318.3353119673.

The spelling of 2291277312 in words is "two billion, two hundred ninety-one million, two hundred seventy-seven thousand, three hundred twelve".