80315691 has 8 divisors (see below), whose sum is σ = 107649024. Its totient is φ = 53263080.

The previous prime is 80315671. The next prime is 80315693. The reversal of 80315691 is 19651308.

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

It is not a de Polignac number, because 80315691 - 2⁵ = 80315659 is a prime.

It is a super-2 number, since 2×80315691² = 12901220441614962, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (80315693) 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, 69511 + ... + 70656.

It is an arithmetic number, because the mean of its divisors is an integer number (13456128).

Almost surely, 2^80315691 is an apocalyptic number.

80315691 is a deficient number, since it is larger than the sum of its proper divisors (27333333).

80315691 is a wasteful number, since it uses less digits than its factorization.

80315691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140361.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 80315691 is about 8961.9021976364. The cubic root of 80315691 is about 431.4529738077.

Adding to 80315691 its reverse (19651308), we get a palindrome (99966999).

The spelling of 80315691 in words is "eighty million, three hundred fifteen thousand, six hundred ninety-one".