40340303 has 4 divisors (see below), whose sum is σ = 42713280. Its totient is φ = 37967328.

The previous prime is 40340297. The next prime is 40340317. The reversal of 40340303 is 30304304.

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 40340303 - 2⁶ = 40340239 is a prime.

It is a super-2 number, since 2×40340303² = 3254680092263618, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 2372959 = 40340303 / (4 + 0 + 3 + 4 + 0 + 3 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40340203) 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, 1186463 + ... + 1186496.

It is an arithmetic number, because the mean of its divisors is an integer number (10678320).

Almost surely, 2^40340303 is an apocalyptic number.

40340303 is a deficient number, since it is larger than the sum of its proper divisors (2372977).

40340303 is a wasteful number, since it uses less digits than its factorization.

40340303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372976.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 40340303 is about 6351.4016563275. The cubic root of 40340303 is about 342.9623018121.

Adding to 40340303 its reverse (30304304), we get a palindrome (70644607).

The spelling of 40340303 in words is "forty million, three hundred forty thousand, three hundred three".