321142312 has 8 divisors (see below), whose sum is σ = 602141850. Its totient is φ = 160571152.

The previous prime is 321142309. The next prime is 321142319. The reversal of 321142312 is 213241123.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 309267396 + 11874916 = 17586^2 + 3446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 321142312.

It is not an unprimeable number, because it can be changed into a prime (321142319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20071387 + ... + 20071402.

Almost surely, 2^321142312 is an apocalyptic number.

It is an amenable number.

321142312 is a deficient number, since it is larger than the sum of its proper divisors (280999538).

321142312 is a wasteful number, since it uses less digits than its factorization.

321142312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40142795 (or 40142791 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 321142312 is about 17920.4439677146. The cubic root of 321142312 is about 684.8032979887.

Adding to 321142312 its reverse (213241123), we get a palindrome (534383435).

The spelling of 321142312 in words is "three hundred twenty-one million, one hundred forty-two thousand, three hundred twelve".