3223131231 has 4 divisors (see below), whose sum is σ = 4297508312. Its totient is φ = 2148754152.

The previous prime is 3223131211. The next prime is 3223131239. The reversal of 3223131231 is 1321313223.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3223131231 - 2¹¹ = 3223129183 is a prime.

It is a super-2 number, since 2×3223131231² = 20777149864495150722, 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 = 3223131198 and 3223131207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3223131239) 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, 537188536 + ... + 537188541.

It is an arithmetic number, because the mean of its divisors is an integer number (1074377078).

Almost surely, 2^3223131231 is an apocalyptic number.

3223131231 is a deficient number, since it is larger than the sum of its proper divisors (1074377081).

3223131231 is a wasteful number, since it uses less digits than its factorization.

3223131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074377080.

The product of its digits is 648, while the sum is 21.

The square root of 3223131231 is about 56772.6274801510. The cubic root of 3223131231 is about 1477.1547526041.

Adding to 3223131231 its reverse (1321313223), we get a palindrome (4544444454).

The spelling of 3223131231 in words is "three billion, two hundred twenty-three million, one hundred thirty-one thousand, two hundred thirty-one".