40308263 has 2 divisors, whose sum is σ = 40308264. Its totient is φ = 40308262.

The previous prime is 40308239. The next prime is 40308293. The reversal of 40308263 is 36280304.

40308263 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 40308263 - 2⁶ = 40308199 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40308223) 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, 20154131 + 20154132.

It is an arithmetic number, because the mean of its divisors is an integer number (20154132).

Almost surely, 2^40308263 is an apocalyptic number.

40308263 is a deficient number, since it is larger than the sum of its proper divisors (1).

40308263 is an equidigital number, since it uses as much as digits as its factorization.

40308263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 40308263 is about 6348.8788774082. The cubic root of 40308263 is about 342.8714793030.

Adding to 40308263 its reverse (36280304), we get a palindrome (76588567).

The spelling of 40308263 in words is "forty million, three hundred eight thousand, two hundred sixty-three".