3223221231 has 4 divisors (see below), whose sum is σ = 4297628312. Its totient is φ = 2148814152.

The previous prime is 3223221223. The next prime is 3223221283. The reversal of 3223221231 is 1321223223.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1321223223 = 3 ⋅440407741.

It is not a de Polignac number, because 3223221231 - 2³ = 3223221223 is a prime.

It is a super-2 number, since 2×3223221231² = 20778310207938310722, 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 = 3223221198 and 3223221207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3223221431) 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, 537203536 + ... + 537203541.

It is an arithmetic number, because the mean of its divisors is an integer number (1074407078).

Almost surely, 2^3223221231 is an apocalyptic number.

3223221231 is a deficient number, since it is larger than the sum of its proper divisors (1074407081).

3223221231 is a wasteful number, since it uses less digits than its factorization.

3223221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074407080.

The product of its digits is 864, while the sum is 21.

The square root of 3223221231 is about 56773.4201101184. The cubic root of 3223221231 is about 1477.1685014176.

Adding to 3223221231 its reverse (1321223223), we get a palindrome (4544444454).

The spelling of 3223221231 in words is "three billion, two hundred twenty-three million, two hundred twenty-one thousand, two hundred thirty-one".