321343512 has 64 divisors (see below), whose sum is σ = 937681920. Its totient is φ = 89856768.

The previous prime is 321343507. The next prime is 321343531. The reversal of 321343512 is 215343123.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12453 + ... + 28244.

It is an arithmetic number, because the mean of its divisors is an integer number (14651280).

Almost surely, 2^321343512 is an apocalyptic number.

It is an amenable number.

321343512 is an abundant number, since it is smaller than the sum of its proper divisors (616338408).

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

321343512 is a wasteful number, since it uses less digits than its factorization.

321343512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40760 (or 40756 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 321343512 is about 17926.0567889316. The cubic root of 321343512 is about 684.9462809739.

Adding to 321343512 its reverse (215343123), we get a palindrome (536686635).

The spelling of 321343512 in words is "three hundred twenty-one million, three hundred forty-three thousand, five hundred twelve".