232001309 has 2 divisors, whose sum is σ = 232001310. Its totient is φ = 232001308.

The previous prime is 232001291. The next prime is 232001321. The reversal of 232001309 is 903100232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198105625 + 33895684 = 14075^2 + 5822^2 .

It is a cyclic number.

It is not a de Polignac number, because 232001309 - 2⁸ = 232001053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232001389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116000654 + 116000655.

It is an arithmetic number, because the mean of its divisors is an integer number (116000655).

Almost surely, 2^232001309 is an apocalyptic number.

It is an amenable number.

232001309 is a deficient number, since it is larger than the sum of its proper divisors (1).

232001309 is an equidigital number, since it uses as much as digits as its factorization.

232001309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 232001309 is about 15231.5891816974. The cubic root of 232001309 is about 614.4645207852.

The spelling of 232001309 in words is "two hundred thirty-two million, one thousand, three hundred nine".