12303155 has 16 divisors (see below), whose sum is σ = 15933024. Its totient is φ = 9085440.

The previous prime is 12303149. The next prime is 12303167. The reversal of 12303155 is 55130321.

12303155 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 12303155 - 2⁴ = 12303139 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a zygodrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3140 + ... + 5870.

It is an arithmetic number, because the mean of its divisors is an integer number (995814).

Almost surely, 2^12303155 is an apocalyptic number.

12303155 is a deficient number, since it is larger than the sum of its proper divisors (3629869).

12303155 is a wasteful number, since it uses less digits than its factorization.

12303155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 12303155 is about 3507.5853517769. The cubic root of 12303155 is about 230.8547589954.

Adding to 12303155 its reverse (55130321), we get a palindrome (67433476).

The spelling of 12303155 in words is "twelve million, three hundred three thousand, one hundred fifty-five".