40568313 has 4 divisors (see below), whose sum is σ = 54091088. Its totient is φ = 27045540.

The previous prime is 40568309. The next prime is 40568351. The reversal of 40568313 is 31386504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40568313 - 2² = 40568309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40568413) 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, 6761383 + ... + 6761388.

It is an arithmetic number, because the mean of its divisors is an integer number (13522772).

Almost surely, 2^40568313 is an apocalyptic number.

It is an amenable number.

40568313 is a deficient number, since it is larger than the sum of its proper divisors (13522775).

40568313 is a wasteful number, since it uses less digits than its factorization.

40568313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13522774.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 40568313 is about 6369.3259454985. The cubic root of 40568313 is about 343.6072479219.

The spelling of 40568313 in words is "forty million, five hundred sixty-eight thousand, three hundred thirteen".