3132221 has 4 divisors (see below), whose sum is σ = 3198912. Its totient is φ = 3065532.

The previous prime is 3132187. The next prime is 3132257. The reversal of 3132221 is 1222313.

It is a happy number.

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: 1222313 = 1051 ⋅1163.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3132221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3132196 and 3132205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3132281) 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, 33275 + ... + 33368.

It is an arithmetic number, because the mean of its divisors is an integer number (799728).

Almost surely, 2^3132221 is an apocalyptic number.

It is an amenable number.

3132221 is a deficient number, since it is larger than the sum of its proper divisors (66691).

3132221 is an equidigital number, since it uses as much as digits as its factorization.

3132221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66690.

The product of its digits is 72, while the sum is 14.

The square root of 3132221 is about 1769.8081816965. The cubic root of 3132221 is about 146.3134100564.

Adding to 3132221 its reverse (1222313), we get a palindrome (4354534).

The spelling of 3132221 in words is "three million, one hundred thirty-two thousand, two hundred twenty-one".