323105231 has 4 divisors (see below), whose sum is σ = 324334032. Its totient is φ = 321876432.

The previous prime is 323105221. The next prime is 323105257. The reversal of 323105231 is 132501323.

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

It is a cyclic number.

It is not a de Polignac number, because 323105231 - 2²² = 318910927 is a prime.

It is a super-2 number, since 2×323105231² = 208793980599126722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323105221) 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, 614006 + ... + 614531.

It is an arithmetic number, because the mean of its divisors is an integer number (81083508).

Almost surely, 2^323105231 is an apocalyptic number.

323105231 is a deficient number, since it is larger than the sum of its proper divisors (1228801).

323105231 is a wasteful number, since it uses less digits than its factorization.

323105231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228800.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 323105231 is about 17975.1281219356. The cubic root of 323105231 is about 686.1957065572.

Adding to 323105231 its reverse (132501323), we get a palindrome (455606554).

The spelling of 323105231 in words is "three hundred twenty-three million, one hundred five thousand, two hundred thirty-one".