1200323412 has 72 divisors (see below), whose sum is σ = 3108758016. Its totient is φ = 390325824.

The previous prime is 1200323389. The next prime is 1200323419. The reversal of 1200323412 is 2143230021.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200323419) 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 23 ways as a sum of consecutive naturals, for example, 619998 + ... + 621930.

Almost surely, 2^1200323412 is an apocalyptic number.

1200323412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200323412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1554379008).

1200323412 is an abundant number, since it is smaller than the sum of its proper divisors (1908434604).

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

1200323412 is a wasteful number, since it uses less digits than its factorization.

1200323412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357 (or 2352 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1200323412 is about 34645.6838870299. The cubic root of 1200323412 is about 1062.7540263112.

Adding to 1200323412 its reverse (2143230021), we get a palindrome (3343553433).

The spelling of 1200323412 in words is "one billion, two hundred million, three hundred twenty-three thousand, four hundred twelve".