120331232309 has 2 divisors, whose sum is σ = 120331232310. Its totient is φ = 120331232308.

The previous prime is 120331232299. The next prime is 120331232317. The reversal of 120331232309 is 903232133021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89429108209 + 30902124100 = 299047^2 + 175790^2 .

It is a cyclic number.

It is not a de Polignac number, because 120331232309 - 2⁸ = 120331232053 is a prime.

It is a Sophie Germain 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 (120331232339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60165616154 + 60165616155.

It is an arithmetic number, because the mean of its divisors is an integer number (60165616155).

Almost surely, 2^120331232309 is an apocalyptic number.

It is an amenable number.

120331232309 is a deficient number, since it is larger than the sum of its proper divisors (1).

120331232309 is an equidigital number, since it uses as much as digits as its factorization.

120331232309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

The spelling of 120331232309 in words is "one hundred twenty billion, three hundred thirty-one million, two hundred thirty-two thousand, three hundred nine".