12304891 has 2 divisors, whose sum is σ = 12304892. Its totient is φ = 12304890.

The previous prime is 12304843. The next prime is 12304907. The reversal of 12304891 is 19840321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12304891 - 2⁷ = 12304763 is a prime.

It is not a weakly prime, because it can be changed into another prime (12304811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6152445 + 6152446.

It is an arithmetic number, because the mean of its divisors is an integer number (6152446).

Almost surely, 2^12304891 is an apocalyptic number.

12304891 is a deficient number, since it is larger than the sum of its proper divisors (1).

12304891 is an equidigital number, since it uses as much as digits as its factorization.

12304891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 12304891 is about 3507.8328067341. The cubic root of 12304891 is about 230.8656165089.

The spelling of 12304891 in words is "twelve million, three hundred four thousand, eight hundred ninety-one".