1200442311 has 6 divisors (see below), whose sum is σ = 1733972240. Its totient is φ = 800294868.

The previous prime is 1200442277. The next prime is 1200442333. The reversal of 1200442311 is 1132440021.

It is not a de Polignac number, because 1200442311 - 2⁶ = 1200442247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200446311) 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 5 ways as a sum of consecutive naturals, for example, 66691231 + ... + 66691248.

Almost surely, 2^1200442311 is an apocalyptic number.

1200442311 is a deficient number, since it is larger than the sum of its proper divisors (533529929).

1200442311 is a wasteful number, since it uses less digits than its factorization.

1200442311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133382485 (or 133382482 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1200442311 is about 34647.3997725659. The cubic root of 1200442311 is about 1062.7891158040.

Adding to 1200442311 its reverse (1132440021), we get a palindrome (2332882332).

The spelling of 1200442311 in words is "one billion, two hundred million, four hundred forty-two thousand, three hundred eleven".