321351264 has 72 divisors (see below), whose sum is σ = 984149712. Its totient is φ = 98876160.

The previous prime is 321351257. The next prime is 321351269. The reversal of 321351264 is 462153123.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321351269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39172 + ... + 46659.

It is an arithmetic number, because the mean of its divisors is an integer number (13668746).

Almost surely, 2^321351264 is an apocalyptic number.

It is an amenable number.

321351264 is an abundant number, since it is smaller than the sum of its proper divisors (662798448).

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

321351264 is a wasteful number, since it uses less digits than its factorization.

321351264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85860 (or 85849 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 321351264 is about 17926.2730091896. The cubic root of 321351264 is about 684.9517887464.

The spelling of 321351264 in words is "three hundred twenty-one million, three hundred fifty-one thousand, two hundred sixty-four".