80811337 has 4 divisors (see below), whose sum is σ = 81126036. Its totient is φ = 80496640.

The previous prime is 80811323. The next prime is 80811343. The reversal of 80811337 is 73311808.

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 79762761 + 1048576 = 8931^2 + 1024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80811337 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80811299 and 80811308.

It is not an unprimeable number, because it can be changed into a prime (80811307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156964 + ... + 157477.

It is an arithmetic number, because the mean of its divisors is an integer number (20281509).

Almost surely, 2^80811337 is an apocalyptic number.

It is an amenable number.

80811337 is a deficient number, since it is larger than the sum of its proper divisors (314699).

80811337 is a wasteful number, since it uses less digits than its factorization.

80811337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314698.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 80811337 is about 8989.5126119273. The cubic root of 80811337 is about 432.3386850925.

The spelling of 80811337 in words is "eighty million, eight hundred eleven thousand, three hundred thirty-seven".