40304313 has 18 divisors (see below), whose sum is σ = 67722954. Its totient is φ = 23030784.

The previous prime is 40304311. The next prime is 40304317. The reversal of 40304313 is 31340304.

It can be written as a sum of positive squares in only one way, i.e., 28005264 + 12299049 = 5292^2 + 3507^2 .

It is not a de Polignac number, because 40304313 - 2¹ = 40304311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40304311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 45256 + ... + 46137.

Almost surely, 2^40304313 is an apocalyptic number.

It is an amenable number.

40304313 is a deficient number, since it is larger than the sum of its proper divisors (27418641).

40304313 is a wasteful number, since it uses less digits than its factorization.

40304313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91413 (or 91403 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 40304313 is about 6348.5677912424. The cubic root of 40304313 is about 342.8602790636.

Adding to 40304313 its reverse (31340304), we get a palindrome (71644617).

The spelling of 40304313 in words is "forty million, three hundred four thousand, three hundred thirteen".