32320513021 has 4 divisors (see below), whose sum is σ = 33435013500. Its totient is φ = 31206012544.

The previous prime is 32320513019. The next prime is 32320513051. The reversal of 32320513021 is 12031502323.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12031502323 = 61 ⋅197237743.

It can be written as a sum of positive squares in 2 ways, for example, as 26546184900 + 5774328121 = 162930^2 + 75989^2 .

It is a cyclic number.

It is not a de Polignac number, because 32320513021 - 2¹ = 32320513019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32320512983 and 32320513001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32320513051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557250196 + ... + 557250253.

It is an arithmetic number, because the mean of its divisors is an integer number (8358753375).

Almost surely, 2^32320513021 is an apocalyptic number.

It is an amenable number.

32320513021 is a deficient number, since it is larger than the sum of its proper divisors (1114500479).

32320513021 is a wasteful number, since it uses less digits than its factorization.

32320513021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114500478.

The product of its (nonzero) digits is 1080, while the sum is 22.

The spelling of 32320513021 in words is "thirty-two billion, three hundred twenty million, five hundred thirteen thousand, twenty-one".