1131233012311 has 4 divisors (see below), whose sum is σ = 1131331537512. Its totient is φ = 1131134487112.

The previous prime is 1131233012293. The next prime is 1131233012383. The reversal of 1131233012311 is 1132103321311.

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 1131233012311 - 2¹¹ = 1131233010263 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 (1131233012111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49245376 + ... + 49268341.

It is an arithmetic number, because the mean of its divisors is an integer number (282832884378).

Almost surely, 2^{1131233012311} is an apocalyptic number.

1131233012311 is a deficient number, since it is larger than the sum of its proper divisors (98525201).

1131233012311 is an equidigital number, since it uses as much as digits as its factorization.

1131233012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98525200.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1131233012311 its reverse (1132103321311), we get a palindrome (2263336333622).

The spelling of 1131233012311 in words is "one trillion, one hundred thirty-one billion, two hundred thirty-three million, twelve thousand, three hundred eleven".