2312321 has 8 divisors (see below), whose sum is σ = 2604288. Its totient is φ = 2034000.

The previous prime is 2312311. The next prime is 2312341. The reversal of 2312321 is 1232132.

Added to its reverse (1232132) it gives a triangular number (3544453 = T₂₆₆₂).

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2312321 - 2¹⁸ = 2050177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2312296 and 2312305.

It is not an unprimeable number, because it can be changed into a prime (2312311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3050 + ... + 3731.

It is an arithmetic number, because the mean of its divisors is an integer number (325536).

2^2312321 is an apocalyptic number.

It is an amenable number.

2312321 is a deficient number, since it is larger than the sum of its proper divisors (291967).

2312321 is a wasteful number, since it uses less digits than its factorization.

2312321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6823.

The product of its digits is 72, while the sum is 14.

The square root of 2312321 is about 1520.6317765981. The cubic root of 2312321 is about 132.2358997168.

Adding to 2312321 its reverse (1232132), we get a palindrome (3544453).

It can be divided in two parts, 231 and 2321, that added together give a palindrome (2552).

The spelling of 2312321 in words is "two million, three hundred twelve thousand, three hundred twenty-one".