12481309 has 8 divisors (see below), whose sum is σ = 13444640. Its totient is φ = 11548656.

The previous prime is 12481307. The next prime is 12481319. The reversal of 12481309 is 90318421.

It is a happy number.

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

It is not a de Polignac number, because 12481309 - 2¹ = 12481307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12481307) 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, 6822 + ... + 8455.

It is an arithmetic number, because the mean of its divisors is an integer number (1680580).

Almost surely, 2^12481309 is an apocalyptic number.

12481309 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12481309 is a deficient number, since it is larger than the sum of its proper divisors (963331).

12481309 is a wasteful number, since it uses less digits than its factorization.

12481309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15339.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 12481309 is about 3532.8896105030. The cubic root of 12481309 is about 231.9637093949.

The spelling of 12481309 in words is "twelve million, four hundred eighty-one thousand, three hundred nine".