1011131211311 has 6 divisors (see below), whose sum is σ = 1094893560360. Its totient is φ = 933351887208.

The previous prime is 1011131211283. The next prime is 1011131211313. The reversal of 1011131211311 is 1131121311101.

It is a happy number.

It is not a de Polignac number, because 1011131211311 - 2⁶ = 1011131211247 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 1011131211311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011131211313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2991512291 + ... + 2991512628.

It is an arithmetic number, because the mean of its divisors is an integer number (182482260060).

Almost surely, 2^{1011131211311} is an apocalyptic number.

1011131211311 is a deficient number, since it is larger than the sum of its proper divisors (83762349049).

1011131211311 is an equidigital number, since it uses as much as digits as its factorization.

1011131211311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5983024945 (or 5983024932 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 1011131211311 its reverse (1131121311101), we get a palindrome (2142252522412).

The spelling of 1011131211311 in words is "one trillion, eleven billion, one hundred thirty-one million, two hundred eleven thousand, three hundred eleven".