2311972 has 24 divisors (see below), whose sum is σ = 4399416. Its totient is φ = 1056768.

The previous prime is 2311957. The next prime is 2311993. The reversal of 2311972 is 2791132.

It can be written as a sum of positive squares in 4 ways, for example, as 1115136 + 1196836 = 1056^2 + 1094^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8868 + ... + 9124.

It is an arithmetic number, because the mean of its divisors is an integer number (183309).

2^2311972 is an apocalyptic number.

It is an amenable number.

2311972 is a deficient number, since it is larger than the sum of its proper divisors (2087444).

2311972 is a wasteful number, since it uses less digits than its factorization.

2311972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 445 counting only the distinct ones).

The product of its digits is 756, while the sum is 25.

The square root of 2311972 is about 1520.5170173332. The cubic root of 2311972 is about 132.2292465674.

The spelling of 2311972 in words is "two million, three hundred eleven thousand, nine hundred seventy-two".