1200404003311 has 4 divisors (see below), whose sum is σ = 1263583161400. Its totient is φ = 1137224845224.

The previous prime is 1200404003303. The next prime is 1200404003327. The reversal of 1200404003311 is 1133004040021.

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 1200404003311 - 2³ = 1200404003303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 63179158069 = 1200404003311 / (1 + 2 + 0 + 0 + 4 + 0 + 4 + 0 + 0 + 3 + 3 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200404003341) 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, 31589579016 + ... + 31589579053.

It is an arithmetic number, because the mean of its divisors is an integer number (315895790350).

Almost surely, 2^{1200404003311} is an apocalyptic number.

1200404003311 is a deficient number, since it is larger than the sum of its proper divisors (63179158089).

1200404003311 is an equidigital number, since it uses as much as digits as its factorization.

1200404003311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63179158088.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1200404003311 its reverse (1133004040021), we get a palindrome (2333408043332).

The spelling of 1200404003311 in words is "one trillion, two hundred billion, four hundred four million, three thousand, three hundred eleven".