321212323 has 4 divisors (see below), whose sum is σ = 332288640. Its totient is φ = 310136008.

The previous prime is 321212321. The next prime is 321212329. The reversal of 321212323 is 323212123.

321212323 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321212323 - 2¹ = 321212321 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 321212323.

It is not an unprimeable number, because it can be changed into a prime (321212321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5538115 + ... + 5538172.

It is an arithmetic number, because the mean of its divisors is an integer number (83072160).

Almost surely, 2^321212323 is an apocalyptic number.

321212323 is a deficient number, since it is larger than the sum of its proper divisors (11076317).

321212323 is a wasteful number, since it uses less digits than its factorization.

321212323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11076316.

The product of its digits is 432, while the sum is 19.

The square root of 321212323 is about 17922.3972447884. The cubic root of 321212323 is about 684.8530581504.

Adding to 321212323 its reverse (323212123), we get a palindrome (644424446).

The spelling of 321212323 in words is "three hundred twenty-one million, two hundred twelve thousand, three hundred twenty-three".