40808311 has 4 divisors (see below), whose sum is σ = 40860952. Its totient is φ = 40755672.

The previous prime is 40808303. The next prime is 40808321. The reversal of 40808311 is 11380804.

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 40808311 - 2³ = 40808303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40808321) 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, 25140 + ... + 26713.

It is an arithmetic number, because the mean of its divisors is an integer number (10215238).

Almost surely, 2^40808311 is an apocalyptic number.

40808311 is a deficient number, since it is larger than the sum of its proper divisors (52641).

40808311 is an equidigital number, since it uses as much as digits as its factorization.

40808311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52640.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 40808311 is about 6388.1383047019. The cubic root of 40808311 is about 344.2834979332.

The spelling of 40808311 in words is "forty million, eight hundred eight thousand, three hundred eleven".