80181313 has 4 divisors (see below), whose sum is σ = 80692180. Its totient is φ = 79670448.

The previous prime is 80181307. The next prime is 80181319. The reversal of 80181313 is 31318108.

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

It is an interprime number because it is at equal distance from previous prime (80181307) and next prime (80181319).

It can be written as a sum of positive squares in 2 ways, for example, as 28815424 + 51365889 = 5368^2 + 7167^2 .

It is a cyclic number.

It is not a de Polignac number, because 80181313 - 2¹⁷ = 80050241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80181319) 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, 255198 + ... + 255511.

It is an arithmetic number, because the mean of its divisors is an integer number (20173045).

Almost surely, 2^80181313 is an apocalyptic number.

It is an amenable number.

80181313 is a deficient number, since it is larger than the sum of its proper divisors (510867).

80181313 is a wasteful number, since it uses less digits than its factorization.

80181313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510866.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 80181313 is about 8954.4018784059. The cubic root of 80181313 is about 431.2122149069.

The spelling of 80181313 in words is "eighty million, one hundred eighty-one thousand, three hundred thirteen".