40317323 has 2 divisors, whose sum is σ = 40317324. Its totient is φ = 40317322.

The previous prime is 40317313. The next prime is 40317341. The reversal of 40317323 is 32371304.

It is a happy number.

40317323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40317323 - 2²² = 36123019 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (40317313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20158661 + 20158662.

It is an arithmetic number, because the mean of its divisors is an integer number (20158662).

Almost surely, 2^40317323 is an apocalyptic number.

40317323 is a deficient number, since it is larger than the sum of its proper divisors (1).

40317323 is an equidigital number, since it uses as much as digits as its factorization.

40317323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 40317323 is about 6349.5923491197. The cubic root of 40317323 is about 342.8971662024.

Adding to 40317323 its reverse (32371304), we get a palindrome (72688627).

The spelling of 40317323 in words is "forty million, three hundred seventeen thousand, three hundred twenty-three".