323220131 has 4 divisors (see below), whose sum is σ = 348083232. Its totient is φ = 298357032.

The previous prime is 323220119. The next prime is 323220137. The reversal of 323220131 is 131022323.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323220131 is a prime.

It is a super-2 number, since 2×323220131² = 208942506167314322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323220137) 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, 12431531 + ... + 12431556.

It is an arithmetic number, because the mean of its divisors is an integer number (87020808).

Almost surely, 2^323220131 is an apocalyptic number.

323220131 is a deficient number, since it is larger than the sum of its proper divisors (24863101).

323220131 is a wasteful number, since it uses less digits than its factorization.

323220131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24863100.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 323220131 is about 17978.3239207664. The cubic root of 323220131 is about 686.2770366575.

Adding to 323220131 its reverse (131022323), we get a palindrome (454242454).

The spelling of 323220131 in words is "three hundred twenty-three million, two hundred twenty thousand, one hundred thirty-one".