232133309 has 2 divisors, whose sum is σ = 232133310. Its totient is φ = 232133308.

The previous prime is 232133299. The next prime is 232133311. The reversal of 232133309 is 903331232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198528100 + 33605209 = 14090^2 + 5797^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232133309 is a prime.

It is a Sophie Germain prime.

Together with 232133311, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232133399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116066654 + 116066655.

It is an arithmetic number, because the mean of its divisors is an integer number (116066655).

Almost surely, 2^232133309 is an apocalyptic number.

It is an amenable number.

232133309 is a deficient number, since it is larger than the sum of its proper divisors (1).

232133309 is an equidigital number, since it uses as much as digits as its factorization.

232133309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 26.

The square root of 232133309 is about 15235.9216655902. The cubic root of 232133309 is about 614.5810344078.

The spelling of 232133309 in words is "two hundred thirty-two million, one hundred thirty-three thousand, three hundred nine".