12305997 has 12 divisors (see below), whose sum is σ = 19391424. Its totient is φ = 7458120.

The previous prime is 12305987. The next prime is 12306001. The reversal of 12305997 is 79950321.

It is not a de Polignac number, because 12305997 - 2⁴ = 12305981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12305987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62053 + ... + 62250.

It is an arithmetic number, because the mean of its divisors is an integer number (1615952).

Almost surely, 2^12305997 is an apocalyptic number.

It is an amenable number.

12305997 is a deficient number, since it is larger than the sum of its proper divisors (7085427).

12305997 is a wasteful number, since it uses less digits than its factorization.

12305997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124320 (or 124317 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 12305997 is about 3507.9904503861. The cubic root of 12305997 is about 230.8725332632.

It can be divided in two parts, 1230 and 5997, that added together give a palindrome (7227).

The spelling of 12305997 in words is "twelve million, three hundred five thousand, nine hundred ninety-seven".