40243315 has 16 divisors (see below), whose sum is σ = 55442880. Its totient is φ = 27469440.

The previous prime is 40243303. The next prime is 40243319. The reversal of 40243315 is 51334204.

It is not a de Polignac number, because 40243315 - 2⁵ = 40243283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40243319) 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 in 15 ways as a sum of consecutive naturals, for example, 5505 + ... + 10525.

It is an arithmetic number, because the mean of its divisors is an integer number (3465180).

Almost surely, 2^40243315 is an apocalyptic number.

40243315 is a deficient number, since it is larger than the sum of its proper divisors (15199565).

40243315 is a wasteful number, since it uses less digits than its factorization.

40243315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5262.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40243315 is about 6343.7618965406. The cubic root of 40243315 is about 342.6872260312.

Adding to 40243315 its reverse (51334204), we get a palindrome (91577519).

The spelling of 40243315 in words is "forty million, two hundred forty-three thousand, three hundred fifteen".