1131203311211 has 8 divisors (see below), whose sum is σ = 1132638332640. Its totient is φ = 1129768622208.

The previous prime is 1131203311177. The next prime is 1131203311223. The reversal of 1131203311211 is 1121133021311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131203311211 - 2¹⁰ = 1131203310187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131203311291) 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, 7120730 + ... + 7277856.

It is an arithmetic number, because the mean of its divisors is an integer number (141579791580).

Almost surely, 2^{1131203311211} is an apocalyptic number.

1131203311211 is a deficient number, since it is larger than the sum of its proper divisors (1435021429).

1131203311211 is an equidigital number, since it uses as much as digits as its factorization.

1131203311211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166213.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1131203311211 its reverse (1121133021311), we get a palindrome (2252336332522).

The spelling of 1131203311211 in words is "one trillion, one hundred thirty-one billion, two hundred three million, three hundred eleven thousand, two hundred eleven".