80311219 has 2 divisors, whose sum is σ = 80311220. Its totient is φ = 80311218.

The previous prime is 80311211. The next prime is 80311267. The reversal of 80311219 is 91211308.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80311219 - 2³ = 80311211 is a prime.

It is a super-2 number, since 2×80311219² = 12899783794531922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80311193 and 80311202.

It is not a weakly prime, because it can be changed into another prime (80311211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40155609 + 40155610.

It is an arithmetic number, because the mean of its divisors is an integer number (40155610).

Almost surely, 2^80311219 is an apocalyptic number.

80311219 is a deficient number, since it is larger than the sum of its proper divisors (1).

80311219 is an equidigital number, since it uses as much as digits as its factorization.

80311219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 80311219 is about 8961.6526935605. The cubic root of 80311219 is about 431.4449658519. Note that the first 3 decimals are identical.

The spelling of 80311219 in words is "eighty million, three hundred eleven thousand, two hundred nineteen".