12303215 has 4 divisors (see below), whose sum is σ = 14763864. Its totient is φ = 9842568.

The previous prime is 12303209. The next prime is 12303217. The reversal of 12303215 is 51230321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51230321 = 31 ⋅1652591.

It is a cyclic number.

It is not a de Polignac number, because 12303215 - 2⁸ = 12302959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12303193 and 12303202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12303217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1230317 + ... + 1230326.

It is an arithmetic number, because the mean of its divisors is an integer number (3690966).

Almost surely, 2^12303215 is an apocalyptic number.

12303215 is a deficient number, since it is larger than the sum of its proper divisors (2460649).

12303215 is an equidigital number, since it uses as much as digits as its factorization.

12303215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460648.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 12303215 is about 3507.5939046589. The cubic root of 12303215 is about 230.8551342721.

Adding to 12303215 its reverse (51230321), we get a palindrome (63533536).

The spelling of 12303215 in words is "twelve million, three hundred three thousand, two hundred fifteen".