20132312320 has 36 divisors (see below), whose sum is σ = 48223182420. Its totient is φ = 8052924416.

The previous prime is 20132312309. The next prime is 20132312323. The reversal of 20132312320 is 2321323102.

It can be written as a sum of positive squares in 2 ways, for example, as 5060330496 + 15071981824 = 71136^2 + 122768^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132312323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7862905 + ... + 7865464.

It is an arithmetic number, because the mean of its divisors is an integer number (1339532845).

Almost surely, 2^20132312320 is an apocalyptic number.

20132312320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20132312320 is an abundant number, since it is smaller than the sum of its proper divisors (28090870100).

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

20132312320 is an equidigital number, since it uses as much as digits as its factorization.

20132312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15728390 (or 15728376 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20132312320 its reverse (2321323102), we get a palindrome (22453635422).

The spelling of 20132312320 in words is "twenty billion, one hundred thirty-two million, three hundred twelve thousand, three hundred twenty".