1323212312 has 16 divisors (see below), whose sum is σ = 2505589200. Its totient is φ = 655055200.

The previous prime is 1323212281. The next prime is 1323212347. The reversal of 1323212312 is 2132123231.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 818012 + ... + 819627.

It is an arithmetic number, because the mean of its divisors is an integer number (156599325).

Almost surely, 2^1323212312 is an apocalyptic number.

It is an amenable number.

1323212312 is a deficient number, since it is larger than the sum of its proper divisors (1182376888).

1323212312 is a wasteful number, since it uses less digits than its factorization.

1323212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637746 (or 1637742 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 1323212312 is about 36375.9853749696. The cubic root of 1323212312 is about 1097.8504335631.

Adding to 1323212312 its reverse (2132123231), we get a palindrome (3455335543).

The spelling of 1323212312 in words is "one billion, three hundred twenty-three million, two hundred twelve thousand, three hundred twelve".