1200331988 has 24 divisors (see below), whose sum is σ = 2228736384. Its totient is φ = 563696000.

The previous prime is 1200331987. The next prime is 1200332009. The reversal of 1200331988 is 8891330021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200331987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15413 + ... + 51363.

It is an arithmetic number, because the mean of its divisors is an integer number (92864016).

Almost surely, 2^1200331988 is an apocalyptic number.

It is an amenable number.

1200331988 is a deficient number, since it is larger than the sum of its proper divisors (1028404396).

1200331988 is a wasteful number, since it uses less digits than its factorization.

1200331988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36463 (or 36461 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1200331988 is about 34645.8076540294. The cubic root of 1200331988 is about 1062.7565573393.

The spelling of 1200331988 in words is "one billion, two hundred million, three hundred thirty-one thousand, nine hundred eighty-eight".