308080081 has 4 divisors (see below), whose sum is σ = 308322612. Its totient is φ = 307837552.

The previous prime is 308080067. The next prime is 308080121. The reversal of 308080081 is 180080803.

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 225270081 + 82810000 = 15009^2 + 9100^2 .

It is a cyclic number.

It is not a de Polignac number, because 308080081 - 2¹¹ = 308078033 is a prime.

It is a super-2 number, since 2×308080081² = 189826672617933122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (308080061) 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, 119350 + ... + 121903.

It is an arithmetic number, because the mean of its divisors is an integer number (77080653).

Almost surely, 2^308080081 is an apocalyptic number.

It is an amenable number.

308080081 is a deficient number, since it is larger than the sum of its proper divisors (242531).

308080081 is a wasteful number, since it uses less digits than its factorization.

308080081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242530.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 308080081 is about 17552.2101457338. The cubic root of 308080081 is about 675.3898660447.

The spelling of 308080081 in words is "three hundred eight million, eighty thousand, eighty-one".