323212231 has 4 divisors (see below), whose sum is σ = 333638464. Its totient is φ = 312786000.

The previous prime is 323212229. The next prime is 323212237. The reversal of 323212231 is 132212323.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132212323 = 331 ⋅399433.

It is a cyclic number.

It is not a de Polignac number, because 323212231 - 2¹ = 323212229 is a prime.

It is a super-2 number, since 2×323212231² = 208932292535994722, 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 = 323212199 and 323212208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323212237) 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, 5213070 + ... + 5213131.

It is an arithmetic number, because the mean of its divisors is an integer number (83409616).

Almost surely, 2^323212231 is an apocalyptic number.

323212231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

323212231 is a deficient number, since it is larger than the sum of its proper divisors (10426233).

323212231 is a wasteful number, since it uses less digits than its factorization.

323212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10426232.

The product of its digits is 432, while the sum is 19.

The square root of 323212231 is about 17978.1042103999. The cubic root of 323212231 is about 686.2714453878.

Adding to 323212231 its reverse (132212323), we get a palindrome (455424554).

It can be divided in two parts, 3232122 and 31, that added together give a triangular number (3232153 = T₂₅₄₂).

The spelling of 323212231 in words is "three hundred twenty-three million, two hundred twelve thousand, two hundred thirty-one".