40820323 has 4 divisors (see below), whose sum is σ = 40877200. Its totient is φ = 40763448.

The previous prime is 40820293. The next prime is 40820333. The reversal of 40820323 is 32302804.

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 40820323 - 2⁵ = 40820291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40820294 and 40820303.

It is not an unprimeable number, because it can be changed into a prime (40820333) 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, 27348 + ... + 28801.

It is an arithmetic number, because the mean of its divisors is an integer number (10219300).

Almost surely, 2^40820323 is an apocalyptic number.

40820323 is a deficient number, since it is larger than the sum of its proper divisors (56877).

40820323 is an equidigital number, since it uses as much as digits as its factorization.

40820323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56876.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 40820323 is about 6389.0784155463. The cubic root of 40820323 is about 344.3172747756.

The spelling of 40820323 in words is "forty million, eight hundred twenty thousand, three hundred twenty-three".