321130243 has 8 divisors (see below), whose sum is σ = 367164512. Its totient is φ = 275135616.

The previous prime is 321130223. The next prime is 321130259. The reversal of 321130243 is 342031123.

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

It is not a de Polignac number, because 321130243 - 2¹³ = 321122051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 321130243.

It is not an unprimeable number, because it can be changed into a prime (321130223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10171 + ... + 27307.

It is an arithmetic number, because the mean of its divisors is an integer number (45895564).

Almost surely, 2^321130243 is an apocalyptic number.

321130243 is a deficient number, since it is larger than the sum of its proper divisors (46034269).

321130243 is a wasteful number, since it uses less digits than its factorization.

321130243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19821.

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

The square root of 321130243 is about 17920.1072262417. The cubic root of 321130243 is about 684.7947192431.

Adding to 321130243 its reverse (342031123), we get a palindrome (663161366).

The spelling of 321130243 in words is "three hundred twenty-one million, one hundred thirty thousand, two hundred forty-three".