32032431221 has 4 divisors (see below), whose sum is σ = 36608492832. Its totient is φ = 27456369612.

The previous prime is 32032431199. The next prime is 32032431241. The reversal of 32032431221 is 12213423023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12213423023 = 74419 ⋅164117.

It is not a de Polignac number, because 32032431221 - 2¹⁴ = 32032414837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32032431241) 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, 2288030795 + ... + 2288030808.

It is an arithmetic number, because the mean of its divisors is an integer number (9152123208).

Almost surely, 2^32032431221 is an apocalyptic number.

It is an amenable number.

32032431221 is a deficient number, since it is larger than the sum of its proper divisors (4576061611).

32032431221 is an equidigital number, since it uses as much as digits as its factorization.

32032431221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4576061610.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 32032431221 its reverse (12213423023), we get a palindrome (44245854244).

The spelling of 32032431221 in words is "thirty-two billion, thirty-two million, four hundred thirty-one thousand, two hundred twenty-one".