1200331992 has 128 divisors (see below), whose sum is σ = 3241555200. Its totient is φ = 369266688.

The previous prime is 1200331987. The next prime is 1200332009. The reversal of 1200331992 is 2991330021.

It is a happy number.

1200331992 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3561648 + ... + 3561984.

It is an arithmetic number, because the mean of its divisors is an integer number (25324650).

Almost surely, 2^1200331992 is an apocalyptic number.

1200331992 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 1200331992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1620777600).

1200331992 is an abundant number, since it is smaller than the sum of its proper divisors (2041223208).

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

1200331992 is a wasteful number, since it uses less digits than its factorization.

1200331992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 1200331992 is about 34645.8077117564. The cubic root of 1200331992 is about 1062.7565585198.

The spelling of 1200331992 in words is "one billion, two hundred million, three hundred thirty-one thousand, nine hundred ninety-two".