20304230031 has 6 divisors (see below), whose sum is σ = 29328332280. Its totient is φ = 13536153348.

The previous prime is 20304230017. The next prime is 20304230033. The reversal of 20304230031 is 13003240302.

It is not a de Polignac number, because 20304230031 - 2¹⁷ = 20304098959 is a prime.

It is a super-2 number, since 2×20304230031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20304229986 and 20304230013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20304230033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1128012771 + ... + 1128012788.

It is an arithmetic number, because the mean of its divisors is an integer number (4888055380).

Almost surely, 2^20304230031 is an apocalyptic number.

20304230031 is a deficient number, since it is larger than the sum of its proper divisors (9024102249).

20304230031 is a wasteful number, since it uses less digits than its factorization.

20304230031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256025565 (or 2256025562 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20304230031 its reverse (13003240302), we get a palindrome (33307470333).

The spelling of 20304230031 in words is "twenty billion, three hundred four million, two hundred thirty thousand, thirty-one".