20343030473 has 2 divisors, whose sum is σ = 20343030474. Its totient is φ = 20343030472.

The previous prime is 20343030469. The next prime is 20343030497. The reversal of 20343030473 is 37403034302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20342746384 + 284089 = 142628^2 + 533^2 .

It is a cyclic number.

It is not a de Polignac number, because 20343030473 - 2² = 20343030469 is a prime.

It is not a weakly prime, because it can be changed into another prime (20343035473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10171515236 + 10171515237.

It is an arithmetic number, because the mean of its divisors is an integer number (10171515237).

Almost surely, 2^20343030473 is an apocalyptic number.

It is an amenable number.

20343030473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20343030473 is an equidigital number, since it uses as much as digits as its factorization.

20343030473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 29.

Adding to 20343030473 its reverse (37403034302), we get a palindrome (57746064775).

The spelling of 20343030473 in words is "twenty billion, three hundred forty-three million, thirty thousand, four hundred seventy-three".