12347145 has 48 divisors (see below), whose sum is σ = 22643712. Its totient is φ = 6215040.

The previous prime is 12347123. The next prime is 12347161. The reversal of 12347145 is 54174321.

12347145 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12347145 - 2⁶ = 12347081 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73852 + ... + 74018.

It is an arithmetic number, because the mean of its divisors is an integer number (471744).

Almost surely, 2^12347145 is an apocalyptic number.

12347145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12347145 is a deficient number, since it is larger than the sum of its proper divisors (10296567).

12347145 is a wasteful number, since it uses less digits than its factorization.

12347145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 259 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 12347145 is about 3513.8504521394. The cubic root of 12347145 is about 231.1295725531.

The spelling of 12347145 in words is "twelve million, three hundred forty-seven thousand, one hundred forty-five".