20112341309 has 2 divisors, whose sum is σ = 20112341310. Its totient is φ = 20112341308.

The previous prime is 20112341303. The next prime is 20112341357. The reversal of 20112341309 is 90314321102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18556433284 + 1555908025 = 136222^2 + 39445^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112341309 - 2¹⁶ = 20112275773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112341303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056170654 + 10056170655.

It is an arithmetic number, because the mean of its divisors is an integer number (10056170655).

Almost surely, 2^20112341309 is an apocalyptic number.

It is an amenable number.

20112341309 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112341309 is an equidigital number, since it uses as much as digits as its factorization.

20112341309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 20112341309 in words is "twenty billion, one hundred twelve million, three hundred forty-one thousand, three hundred nine".