1323021412 has 48 divisors (see below), whose sum is σ = 2434037760. Its totient is φ = 628411392.

The previous prime is 1323021407. The next prime is 1323021419. The reversal of 1323021412 is 2141203231.

It is a happy number.

It is a super-2 number, since 2×1323021412² = 3500771313220947488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1323021412.

It is not an unprimeable number, because it can be changed into a prime (1323021419) 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 15 ways as a sum of consecutive naturals, for example, 3454173 + ... + 3454555.

It is an arithmetic number, because the mean of its divisors is an integer number (50709120).

Almost surely, 2^1323021412 is an apocalyptic number.

It is an amenable number.

1323021412 is a deficient number, since it is larger than the sum of its proper divisors (1111016348).

1323021412 is a wasteful number, since it uses less digits than its factorization.

1323021412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 818 counting only the distinct ones).

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

The square root of 1323021412 is about 36373.3612964213. The cubic root of 1323021412 is about 1097.7976353524.

Adding to 1323021412 its reverse (2141203231), we get a palindrome (3464224643).

The spelling of 1323021412 in words is "one billion, three hundred twenty-three million, twenty-one thousand, four hundred twelve".