321214140 has 96 divisors (see below), whose sum is σ = 1076228160. Its totient is φ = 79066368.

The previous prime is 321214129. The next prime is 321214177. The reversal of 321214140 is 41412123.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15859 + ... + 29898.

It is an arithmetic number, because the mean of its divisors is an integer number (11210710).

Almost surely, 2^321214140 is an apocalyptic number.

321214140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321214140 is an abundant number, since it is smaller than the sum of its proper divisors (755014020).

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

321214140 is a wasteful number, since it uses less digits than its factorization.

321214140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45788 (or 45780 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 321214140 is about 17922.4479354802. The cubic root of 321214140 is about 684.8543494828.

Adding to 321214140 its reverse (41412123), we get a palindrome (362626263).

The spelling of 321214140 in words is "three hundred twenty-one million, two hundred fourteen thousand, one hundred forty".