20312323230 has 64 divisors (see below), whose sum is σ = 50944785408. Its totient is φ = 5178069120.

The previous prime is 20312323181. The next prime is 20312323237. The reversal of 20312323230 is 3232321302.

It is a junction number, because it is equal to n+sod(n) for n = 20312323197 and 20312323206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312323237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106881 + ... + 228140.

It is an arithmetic number, because the mean of its divisors is an integer number (796012272).

Almost surely, 2^20312323230 is an apocalyptic number.

20312323230 is an abundant number, since it is smaller than the sum of its proper divisors (30632462178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20312323230 is a wasteful number, since it uses less digits than its factorization.

20312323230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335121.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20312323230 its reverse (3232321302), we get a palindrome (23544644532).

The spelling of 20312323230 in words is "twenty billion, three hundred twelve million, three hundred twenty-three thousand, two hundred thirty".