321120231 has 8 divisors (see below), whose sum is σ = 428396400. Its totient is φ = 213962112.

The previous prime is 321120187. The next prime is 321120263. The reversal of 321120231 is 132021123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 321120231 - 2¹⁰ = 321119207 is a prime.

It is a super-2 number, since 2×321120231² = 206236405514986722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321120231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321120281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22956 + ... + 34193.

It is an arithmetic number, because the mean of its divisors is an integer number (53549550).

Almost surely, 2^321120231 is an apocalyptic number.

321120231 is a deficient number, since it is larger than the sum of its proper divisors (107276169).

321120231 is a wasteful number, since it uses less digits than its factorization.

321120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59025.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 321120231 is about 17919.8278730573. The cubic root of 321120231 is about 684.7876024672.

Adding to 321120231 its reverse (132021123), we get a palindrome (453141354).

The spelling of 321120231 in words is "three hundred twenty-one million, one hundred twenty thousand, two hundred thirty-one".