3221609173 has 4 divisors (see below), whose sum is σ = 3269692960. Its totient is φ = 3173525388.

The previous prime is 3221609143. The next prime is 3221609189. The reversal of 3221609173 is 3719061223.

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: 3719061223 = 30269 ⋅122867.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3221609173 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 (3221609143) 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, 24041793 + ... + 24041926.

It is an arithmetic number, because the mean of its divisors is an integer number (817423240).

Almost surely, 2^3221609173 is an apocalyptic number.

It is an amenable number.

3221609173 is a deficient number, since it is larger than the sum of its proper divisors (48083787).

3221609173 is an equidigital number, since it uses as much as digits as its factorization.

3221609173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48083786.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 3221609173 is about 56759.2210394047. The cubic root of 3221609173 is about 1476.9221972568.

The spelling of 3221609173 in words is "three billion, two hundred twenty-one million, six hundred nine thousand, one hundred seventy-three".