321342231 has 16 divisors (see below), whose sum is σ = 515436800. Its totient is φ = 173959488.

The previous prime is 321342227. The next prime is 321342247. The reversal of 321342231 is 132243123.

It is not a de Polignac number, because 321342231 - 2² = 321342227 is a prime.

It is a super-2 number, since 2×321342231² = 206521658848114722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321342198 and 321342207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321342221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402286 + ... + 403083.

It is an arithmetic number, because the mean of its divisors is an integer number (32214800).

Almost surely, 2^321342231 is an apocalyptic number.

321342231 is a deficient number, since it is larger than the sum of its proper divisors (194094569).

321342231 is a wasteful number, since it uses less digits than its factorization.

321342231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805398.

The product of its digits is 864, while the sum is 21.

The square root of 321342231 is about 17926.0210587849. The cubic root of 321342231 is about 684.9453708188.

Adding to 321342231 its reverse (132243123), we get a palindrome (453585354).

The spelling of 321342231 in words is "three hundred twenty-one million, three hundred forty-two thousand, two hundred thirty-one".