40305203 has 2 divisors, whose sum is σ = 40305204. Its totient is φ = 40305202.

The previous prime is 40305193. The next prime is 40305217. The reversal of 40305203 is 30250304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40305203 - 2²⁰ = 39256627 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40305253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20152601 + 20152602.

It is an arithmetic number, because the mean of its divisors is an integer number (20152602).

Almost surely, 2^40305203 is an apocalyptic number.

40305203 is a deficient number, since it is larger than the sum of its proper divisors (1).

40305203 is an equidigital number, since it uses as much as digits as its factorization.

40305203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 40305203 is about 6348.6378854050. The cubic root of 40305203 is about 342.8628027257.

Adding to 40305203 its reverse (30250304), we get a palindrome (70555507).

The spelling of 40305203 in words is "forty million, three hundred five thousand, two hundred three".