12403313 has 8 divisors (see below), whose sum is σ = 13577256. Its totient is φ = 11260800.

The previous prime is 12403309. The next prime is 12403351. The reversal of 12403313 is 31330421.

It is a happy number.

12403313 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 795664 + 11607649 = 892^2 + 3407^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12403313 - 2² = 12403309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12403291 and 12403300.

It is not an unprimeable number, because it can be changed into a prime (12403513) 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, 7028 + ... + 8613.

It is an arithmetic number, because the mean of its divisors is an integer number (1697157).

Almost surely, 2^12403313 is an apocalyptic number.

12403313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12403313 is a deficient number, since it is larger than the sum of its proper divisors (1173943).

12403313 is a wasteful number, since it uses less digits than its factorization.

12403313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15715.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 12403313 is about 3521.8337553042. The cubic root of 12403313 is about 231.4795171481.

Adding to 12403313 its reverse (31330421), we get a palindrome (43733734).

The spelling of 12403313 in words is "twelve million, four hundred three thousand, three hundred thirteen".