321240241 has 16 divisors (see below), whose sum is σ = 383641344. Its totient is φ = 263001024.

The previous prime is 321240233. The next prime is 321240263. The reversal of 321240241 is 142042123.

It is a cyclic number.

It is not a de Polignac number, because 321240241 - 2³ = 321240233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321240341) 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, 198351 + ... + 199963.

It is an arithmetic number, because the mean of its divisors is an integer number (23977584).

Almost surely, 2^321240241 is an apocalyptic number.

It is an amenable number.

321240241 is a deficient number, since it is larger than the sum of its proper divisors (62401103).

321240241 is a wasteful number, since it uses less digits than its factorization.

321240241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 321240241 is about 17923.1760857277. The cubic root of 321240241 is about 684.8728987899.

Adding to 321240241 its reverse (142042123), we get a palindrome (463282364).

The spelling of 321240241 in words is "three hundred twenty-one million, two hundred forty thousand, two hundred forty-one".