80891313 has 8 divisors (see below), whose sum is σ = 107933568. Its totient is φ = 53888304.

The previous prime is 80891297. The next prime is 80891323. The reversal of 80891313 is 31319808.

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

It is not a de Polignac number, because 80891313 - 2⁴ = 80891297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80891323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4606 + ... + 13527.

It is an arithmetic number, because the mean of its divisors is an integer number (13491696).

Almost surely, 2^80891313 is an apocalyptic number.

It is an amenable number.

80891313 is a deficient number, since it is larger than the sum of its proper divisors (27042255).

80891313 is a wasteful number, since it uses less digits than its factorization.

80891313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19623.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 80891313 is about 8993.9598064479. The cubic root of 80891313 is about 432.4812612862.

The spelling of 80891313 in words is "eighty million, eight hundred ninety-one thousand, three hundred thirteen".