20310302473 has 2 divisors, whose sum is σ = 20310302474. Its totient is φ = 20310302472.

The previous prime is 20310302429. The next prime is 20310302479. The reversal of 20310302473 is 37420301302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12295039689 + 8015262784 = 110883^2 + 89528^2 .

It is a cyclic number.

It is not a de Polignac number, because 20310302473 - 2³³ = 11720367881 is a prime.

It is not a weakly prime, because it can be changed into another prime (20310302479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155151236 + 10155151237.

It is an arithmetic number, because the mean of its divisors is an integer number (10155151237).

Almost surely, 2^20310302473 is an apocalyptic number.

It is an amenable number.

20310302473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310302473 is an equidigital number, since it uses as much as digits as its factorization.

20310302473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 25.

Adding to 20310302473 its reverse (37420301302), we get a palindrome (57730603775).

The spelling of 20310302473 in words is "twenty billion, three hundred ten million, three hundred two thousand, four hundred seventy-three".