20332331309 has 2 divisors, whose sum is σ = 20332331310. Its totient is φ = 20332331308.

The previous prime is 20332331291. The next prime is 20332331323. The reversal of 20332331309 is 90313323302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12831905284 + 7500426025 = 113278^2 + 86605^2 .

It is a cyclic number.

It is not a de Polignac number, because 20332331309 - 2²⁰ = 20331282733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20332331339) 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, 10166165654 + 10166165655.

It is an arithmetic number, because the mean of its divisors is an integer number (10166165655).

Almost surely, 2^20332331309 is an apocalyptic number.

It is an amenable number.

20332331309 is a deficient number, since it is larger than the sum of its proper divisors (1).

20332331309 is an equidigital number, since it uses as much as digits as its factorization.

20332331309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 29.

The spelling of 20332331309 in words is "twenty billion, three hundred thirty-two million, three hundred thirty-one thousand, three hundred nine".