321301312 has 28 divisors (see below), whose sum is σ = 643554720. Its totient is φ = 159145856.

The previous prime is 321301307. The next prime is 321301319. The reversal of 321301312 is 213103123.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321301319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16612 + ... + 30307.

Almost surely, 2^321301312 is an apocalyptic number.

321301312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

321301312 is an abundant number, since it is smaller than the sum of its proper divisors (322253408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321301312 is a wasteful number, since it uses less digits than its factorization.

321301312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47038 (or 47028 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 321301312 is about 17924.8796927622. The cubic root of 321301312 is about 684.9162964482.

Adding to 321301312 its reverse (213103123), we get a palindrome (534404435).

The spelling of 321301312 in words is "three hundred twenty-one million, three hundred one thousand, three hundred twelve".