12305381 has 8 divisors (see below), whose sum is σ = 13677984. Its totient is φ = 10975120.

The previous prime is 12305333. The next prime is 12305383. The reversal of 12305381 is 18350321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12305381 is a prime.

It is a super-2 number, since 2×12305381² = 302844803110322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12305383) 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, 9971 + ... + 11136.

It is an arithmetic number, because the mean of its divisors is an integer number (1709748).

Almost surely, 2^12305381 is an apocalyptic number.

12305381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12305381 is a deficient number, since it is larger than the sum of its proper divisors (1372603).

12305381 is a wasteful number, since it uses less digits than its factorization.

12305381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21171.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 12305381 is about 3507.9026497325. The cubic root of 12305381 is about 230.8686809448.

The spelling of 12305381 in words is "twelve million, three hundred five thousand, three hundred eighty-one".