2145323 has 4 divisors (see below), whose sum is σ = 2148720. Its totient is φ = 2141928.

The previous prime is 2145307. The next prime is 2145329. The reversal of 2145323 is 3235412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2145323 - 2⁴ = 2145307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2145295 and 2145304.

It is not an unprimeable number, because it can be changed into a prime (2145329) 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, 440 + ... + 2117.

It is an arithmetic number, because the mean of its divisors is an integer number (537180).

2^2145323 is an apocalyptic number.

2145323 is a deficient number, since it is larger than the sum of its proper divisors (3397).

2145323 is an equidigital number, since it uses as much as digits as its factorization.

2145323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396.

The product of its digits is 720, while the sum is 20.

The square root of 2145323 is about 1464.6921178186. The cubic root of 2145323 is about 128.9726320565.

The spelling of 2145323 in words is "two million, one hundred forty-five thousand, three hundred twenty-three".