80303305 has 4 divisors (see below), whose sum is σ = 96363972. Its totient is φ = 64242640.

The previous prime is 80303303. The next prime is 80303309. The reversal of 80303305 is 50330308.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40411449 + 39891856 = 6357^2 + 6316^2 .

It is not a de Polignac number, because 80303305 - 2¹ = 80303303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80303303) 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, 8030326 + ... + 8030335.

It is an arithmetic number, because the mean of its divisors is an integer number (24090993).

Almost surely, 2^80303305 is an apocalyptic number.

It is an amenable number.

80303305 is a deficient number, since it is larger than the sum of its proper divisors (16060667).

80303305 is a wasteful number, since it uses less digits than its factorization.

80303305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16060666.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 80303305 is about 8961.2111346625. The cubic root of 80303305 is about 431.4307936202.

It can be divided in two parts, 80303 and 305, that added together give a palindrome (80608).

The spelling of 80303305 in words is "eighty million, three hundred three thousand, three hundred five".