12305081 has 6 divisors (see below), whose sum is σ = 12485946. Its totient is φ = 12126800.

The previous prime is 12305071. The next prime is 12305113. The reversal of 12305081 is 18050321.

It can be written as a sum of positive squares in only one way, i.e., 8065600 + 4239481 = 2840^2 + 2059^2 .

It is not a de Polignac number, because 12305081 - 2⁶ = 12305017 is a prime.

It is a super-2 number, since 2×12305081² = 302830036833122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12305071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3821 + ... + 6261.

It is an arithmetic number, because the mean of its divisors is an integer number (2080991).

Almost surely, 2^12305081 is an apocalyptic number.

It is an amenable number.

12305081 is a deficient number, since it is larger than the sum of its proper divisors (180865).

12305081 is an frugal number, since it uses more digits than its factorization.

12305081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583 (or 2512 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 12305081 is about 3507.8598888781. The cubic root of 12305081 is about 230.8668047692.

The spelling of 12305081 in words is "twelve million, three hundred five thousand, eighty-one".