12308013 has 24 divisors (see below), whose sum is σ = 19064448. Its totient is φ = 7631712.

The previous prime is 12308011. The next prime is 12308027. The reversal of 12308013 is 31080321.

12308013 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12308013 - 2¹ = 12308011 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12308011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6856 + ... + 8462.

It is an arithmetic number, because the mean of its divisors is an integer number (794352).

Almost surely, 2^12308013 is an apocalyptic number.

It is an amenable number.

12308013 is a deficient number, since it is larger than the sum of its proper divisors (6756435).

12308013 is a wasteful number, since it uses less digits than its factorization.

12308013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673 (or 1670 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 12308013 is about 3508.2777826164. The cubic root of 12308013 is about 230.8851399517.

Adding to 12308013 its reverse (31080321), we get a palindrome (43388334).

It can be divided in two parts, 1230801 and 3, that multiplied together give a triangular number (3692403 = T₂₇₁₇).

The spelling of 12308013 in words is "twelve million, three hundred eight thousand, thirteen".