321912132 has 24 divisors (see below), whose sum is σ = 752136672. Its totient is φ = 107160000.

The previous prime is 321912127. The next prime is 321912133. The reversal of 321912132 is 231219123.

It is not an unprimeable number, because it can be changed into a prime (321912133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8494 + ... + 26757.

It is an arithmetic number, because the mean of its divisors is an integer number (31339028).

Almost surely, 2^321912132 is an apocalyptic number.

It is an amenable number.

321912132 is an abundant number, since it is smaller than the sum of its proper divisors (430224540).

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

321912132 is a wasteful number, since it uses less digits than its factorization.

321912132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36019 (or 36017 counting only the distinct ones).

The product of its digits is 648, while the sum is 24.

The square root of 321912132 is about 17941.9099317771. The cubic root of 321912132 is about 685.3500489454.

It can be divided in two parts, 3219 and 12132, that added together give a palindrome (15351).

The spelling of 321912132 in words is "three hundred twenty-one million, nine hundred twelve thousand, one hundred thirty-two".