2123306 has 8 divisors (see below), whose sum is σ = 3223584. Its totient is φ = 1048780.

The previous prime is 2123281. The next prime is 2123309. The reversal of 2123306 is 6033212.

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

It is not an unprimeable number, because it can be changed into a prime (2123309) 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, 6230 + ... + 6561.

It is an arithmetic number, because the mean of its divisors is an integer number (402948).

2^2123306 is an apocalyptic number.

2123306 is a deficient number, since it is larger than the sum of its proper divisors (1100278).

2123306 is a wasteful number, since it uses less digits than its factorization.

2123306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12876.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2123306 is about 1457.1568206614. The cubic root of 2123306 is about 128.5299076979.

Adding to 2123306 its reverse (6033212), we get a palindrome (8156518).

The spelling of 2123306 in words is "two million, one hundred twenty-three thousand, three hundred six".