12303991 has 8 divisors (see below), whose sum is σ = 14113664. Its totient is φ = 10507320.

The previous prime is 12303979. The next prime is 12303997. The reversal of 12303991 is 19930321.

12303991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 12303991 - 2⁹ = 12303479 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 (12303997) 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, 1125 + ... + 5086.

It is an arithmetic number, because the mean of its divisors is an integer number (1764208).

Almost surely, 2^12303991 is an apocalyptic number.

12303991 is a deficient number, since it is larger than the sum of its proper divisors (1809673).

12303991 is an equidigital number, since it uses as much as digits as its factorization.

12303991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6501.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 12303991 is about 3507.7045200530. The cubic root of 12303991 is about 230.8599877411.

The spelling of 12303991 in words is "twelve million, three hundred three thousand, nine hundred ninety-one".