20310302506 has 16 divisors (see below), whose sum is σ = 33258390984. Its totient is φ = 9245574144.

The previous prime is 20310302479. The next prime is 20310302527. The reversal of 20310302506 is 60520301302.

It can be written as a sum of positive squares in 4 ways, for example, as 10688458225 + 9621844281 = 103385^2 + 98091^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 5348551 + ... + 5352346.

Almost surely, 2^20310302506 is an apocalyptic number.

20310302506 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20310302506 is a deficient number, since it is larger than the sum of its proper divisors (12948088478).

20310302506 is a wasteful number, since it uses less digits than its factorization.

20310302506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10700985.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 20310302506 its reverse (60520301302), we get a palindrome (80830603808).

The spelling of 20310302506 in words is "twenty billion, three hundred ten million, three hundred two thousand, five hundred six".