80405311 has 8 divisors (see below), whose sum is σ = 92594304. Its totient is φ = 68391960.

The previous prime is 80405279. The next prime is 80405327. The reversal of 80405311 is 11350408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80405311 - 2⁵ = 80405279 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 (80405341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42925 + ... + 44758.

It is an arithmetic number, because the mean of its divisors is an integer number (11574288).

Almost surely, 2^80405311 is an apocalyptic number.

80405311 is a deficient number, since it is larger than the sum of its proper divisors (12188993).

80405311 is a wasteful number, since it uses less digits than its factorization.

80405311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87821.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 80405311 is about 8966.9008581561. The cubic root of 80405311 is about 431.6133926162.

Adding to 80405311 its reverse (11350408), we get a palindrome (91755719).

The spelling of 80405311 in words is "eighty million, four hundred five thousand, three hundred eleven".