2197872312 has 32 divisors (see below), whose sum is σ = 5549089680. Its totient is φ = 725369600.

The previous prime is 2197872293. The next prime is 2197872323. The reversal of 2197872312 is 2132787912.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450933 + ... + 455780.

Almost surely, 2^2197872312 is an apocalyptic number.

It is an amenable number.

2197872312 is an abundant number, since it is smaller than the sum of its proper divisors (3351217368).

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

2197872312 is a wasteful number, since it uses less digits than its factorization.

2197872312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906823 (or 906819 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 2197872312 is about 46881.4708813621. The cubic root of 2197872312 is about 1300.1720308828.

The spelling of 2197872312 in words is "two billion, one hundred ninety-seven million, eight hundred seventy-two thousand, three hundred twelve".