2378321 has 4 divisors (see below), whose sum is σ = 2594544. Its totient is φ = 2162100.

The previous prime is 2378303. The next prime is 2378357. The reversal of 2378321 is 1238732.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2378321 - 2¹⁴ = 2361937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2378371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108095 + ... + 108116.

It is an arithmetic number, because the mean of its divisors is an integer number (648636).

2^2378321 is an apocalyptic number.

It is an amenable number.

2378321 is a deficient number, since it is larger than the sum of its proper divisors (216223).

2378321 is a wasteful number, since it uses less digits than its factorization.

2378321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216222.

The product of its digits is 2016, while the sum is 26.

The square root of 2378321 is about 1542.1805990220. The cubic root of 2378321 is about 133.4822412752.

It can be divided in two parts, 237 and 8321, that added together give a palindrome (8558).

The spelling of 2378321 in words is "two million, three hundred seventy-eight thousand, three hundred twenty-one".