30331269809 has 2 divisors, whose sum is σ = 30331269810. Its totient is φ = 30331269808.

The previous prime is 30331269779. The next prime is 30331269811. The reversal of 30331269809 is 90896213303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25295948209 + 5035321600 = 159047^2 + 70960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30331269809 is a prime.

Together with 30331269811, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30331269809.

It is not a weakly prime, because it can be changed into another prime (30331289809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15165634904 + 15165634905.

It is an arithmetic number, because the mean of its divisors is an integer number (15165634905).

Almost surely, 2^30331269809 is an apocalyptic number.

It is an amenable number.

30331269809 is a deficient number, since it is larger than the sum of its proper divisors (1).

30331269809 is an equidigital number, since it uses as much as digits as its factorization.

30331269809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 44.

The spelling of 30331269809 in words is "thirty billion, three hundred thirty-one million, two hundred sixty-nine thousand, eight hundred nine".