3133223221 has 4 divisors (see below), whose sum is σ = 3134847744. Its totient is φ = 3131598700.

The previous prime is 3133223213. The next prime is 3133223293. The reversal of 3133223221 is 1223223313.

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.

It is a cyclic number.

It is not a de Polignac number, because 3133223221 - 2³ = 3133223213 is a prime.

It is a super-2 number, since 2×3133223221² = 19634175505227229682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3133223192 and 3133223201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3133223201) 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, 809365 + ... + 813226.

It is an arithmetic number, because the mean of its divisors is an integer number (783711936).

Almost surely, 2^3133223221 is an apocalyptic number.

It is an amenable number.

3133223221 is a deficient number, since it is larger than the sum of its proper divisors (1624523).

3133223221 is a wasteful number, since it uses less digits than its factorization.

3133223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624522.

The product of its digits is 1296, while the sum is 22.

The square root of 3133223221 is about 55975.2018397433. The cubic root of 3133223221 is about 1463.2901375900.

Adding to 3133223221 its reverse (1223223313), we get a palindrome (4356446534).

The spelling of 3133223221 in words is "three billion, one hundred thirty-three million, two hundred twenty-three thousand, two hundred twenty-one".