20323310232 has 128 divisors (see below), whose sum is σ = 54277724160. Its totient is φ = 6326538240.

The previous prime is 20323310221. The next prime is 20323310237. The reversal of 20323310232 is 23201332302.

It is a super-2 number, since 2×20323310232² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20323310199 and 20323310208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323310237) 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, 15384132 + ... + 15385452.

It is an arithmetic number, because the mean of its divisors is an integer number (424044720).

Almost surely, 2^20323310232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20323310232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27138862080).

20323310232 is an abundant number, since it is smaller than the sum of its proper divisors (33954413928).

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

20323310232 is a wasteful number, since it uses less digits than its factorization.

20323310232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993 (or 1989 counting only the distinct ones).

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

Adding to 20323310232 its reverse (23201332302), we get a palindrome (43524642534).

The spelling of 20323310232 in words is "twenty billion, three hundred twenty-three million, three hundred ten thousand, two hundred thirty-two".