32020312320 has 108 divisors (see below), whose sum is σ = 110786985036. Its totient is φ = 8538746880.

The previous prime is 32020312273. The next prime is 32020312391. The reversal of 32020312320 is 2321302023.

It is a happy number.

32020312320 is a `hidden beast` number, since 32 + 0 + 2 + 0 + 312 + 320 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21110927616 + 10909384704 = 145296^2 + 104448^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 32020312293 and 32020312302.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1378251 + ... + 1401290.

It is an arithmetic number, because the mean of its divisors is an integer number (1025805417).

Almost surely, 2^32020312320 is an apocalyptic number.

32020312320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32020312320 is an abundant number, since it is smaller than the sum of its proper divisors (78766672716).

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

32020312320 is a wasteful number, since it uses less digits than its factorization.

32020312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2779568 (or 2779551 counting only the distinct ones).

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

Adding to 32020312320 its reverse (2321302023), we get a palindrome (34341614343).

The spelling of 32020312320 in words is "thirty-two billion, twenty million, three hundred twelve thousand, three hundred twenty".