13230857 has 2 divisors, whose sum is σ = 13230858. Its totient is φ = 13230856.

The previous prime is 13230853. The next prime is 13230863. The reversal of 13230857 is 75803231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8231161 + 4999696 = 2869^2 + 2236^2 .

It is a cyclic number.

It is not a de Polignac number, because 13230857 - 2² = 13230853 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13230851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615428 + 6615429.

It is an arithmetic number, because the mean of its divisors is an integer number (6615429).

Almost surely, 2^13230857 is an apocalyptic number.

It is an amenable number.

13230857 is a deficient number, since it is larger than the sum of its proper divisors (1).

13230857 is an equidigital number, since it uses as much as digits as its factorization.

13230857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 13230857 is about 3637.4245009347. The cubic root of 13230857 is about 236.5171616317.

The spelling of 13230857 in words is "thirteen million, two hundred thirty thousand, eight hundred fifty-seven".