321420311 has 8 divisors (see below), whose sum is σ = 332745600. Its totient is φ = 310111200.

The previous prime is 321420293. The next prime is 321420349. The reversal of 321420311 is 113024123.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321420311 is a prime.

It is a super-2 number, since 2×321420311² = 206622032646673442, which contains 22 as substring.

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 321420311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321420611) 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, 47861 + ... + 54161.

It is an arithmetic number, because the mean of its divisors is an integer number (41593200).

Almost surely, 2^321420311 is an apocalyptic number.

321420311 is a deficient number, since it is larger than the sum of its proper divisors (11325289).

321420311 is a wasteful number, since it uses less digits than its factorization.

321420311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8089.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 321420311 is about 17928.1987661895. The cubic root of 321420311 is about 685.0008425230. Note that the first 3 decimals are identical.

Adding to 321420311 its reverse (113024123), we get a palindrome (434444434).

The spelling of 321420311 in words is "three hundred twenty-one million, four hundred twenty thousand, three hundred eleven".