20343104137 has 2 divisors, whose sum is σ = 20343104138. Its totient is φ = 20343104136.

The previous prime is 20343104087. The next prime is 20343104143. The reversal of 20343104137 is 73140134302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11645863056 + 8697241081 = 107916^2 + 93259^2 .

It is a cyclic number.

It is not a de Polignac number, because 20343104137 - 2²⁷ = 20208886409 is a prime.

It is not a weakly prime, because it can be changed into another prime (20343104437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10171552068 + 10171552069.

It is an arithmetic number, because the mean of its divisors is an integer number (10171552069).

Almost surely, 2^20343104137 is an apocalyptic number.

It is an amenable number.

20343104137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20343104137 is an equidigital number, since it uses as much as digits as its factorization.

20343104137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 20343104137 its reverse (73140134302), we get a palindrome (93483238439).

The spelling of 20343104137 in words is "twenty billion, three hundred forty-three million, one hundred four thousand, one hundred thirty-seven".