1200331011311 has 4 divisors (see below), whose sum is σ = 1202308492992. Its totient is φ = 1198353529632.

The previous prime is 1200331011301. The next prime is 1200331011331. The reversal of 1200331011311 is 1131101330021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200331011311 - 2²² = 1200326817007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200331011311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200331011301) 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, 988739930 + ... + 988741143.

It is an arithmetic number, because the mean of its divisors is an integer number (300577123248).

Almost surely, 2^{1200331011311} is an apocalyptic number.

1200331011311 is a deficient number, since it is larger than the sum of its proper divisors (1977481681).

1200331011311 is an equidigital number, since it uses as much as digits as its factorization.

1200331011311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977481680.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 1200331011311 its reverse (1131101330021), we get a palindrome (2331432341332).

The spelling of 1200331011311 in words is "one trillion, two hundred billion, three hundred thirty-one million, eleven thousand, three hundred eleven".