2321397 has 12 divisors (see below), whose sum is σ = 3611244. Its totient is φ = 1428480.

The previous prime is 2321393. The next prime is 2321399. The reversal of 2321397 is 7931232.

It can be written as a sum of positive squares in 2 ways, for example, as 133956 + 2187441 = 366^2 + 1479^2 .

It is not a de Polignac number, because 2321397 - 2² = 2321393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2321397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9804 + ... + 10037.

It is an arithmetic number, because the mean of its divisors is an integer number (300937).

2^2321397 is an apocalyptic number.

It is an amenable number.

2321397 is a deficient number, since it is larger than the sum of its proper divisors (1289847).

2321397 is a wasteful number, since it uses less digits than its factorization.

2321397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19860 (or 19857 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 2321397 is about 1523.6131398751. The cubic root of 2321397 is about 132.4086851548.

The spelling of 2321397 in words is "two million, three hundred twenty-one thousand, three hundred ninety-seven".