1200431312 has 20 divisors (see below), whose sum is σ = 2326580256. Its totient is φ = 600023520.

The previous prime is 1200431303. The next prime is 1200431317. The reversal of 1200431312 is 2131340021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200431317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48893 + ... + 69219.

Almost surely, 2^1200431312 is an apocalyptic number.

It is an amenable number.

1200431312 is a deficient number, since it is larger than the sum of its proper divisors (1126148944).

1200431312 is a wasteful number, since it uses less digits than its factorization.

1200431312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24026 (or 24020 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1200431312 is about 34647.2410445623. The cubic root of 1200431312 is about 1062.7858698745.

Adding to 1200431312 its reverse (2131340021), we get a palindrome (3331771333).

The spelling of 1200431312 in words is "one billion, two hundred million, four hundred thirty-one thousand, three hundred twelve".