1131212100311 has 4 divisors (see below), whose sum is σ = 1139350317000. Its totient is φ = 1123073883624.

The previous prime is 1131212100269. The next prime is 1131212100323. The reversal of 1131212100311 is 1130012121311.

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 1131212100311 - 2¹⁴ = 1131212083927 is a prime.

It is a super-4 number, since 4×1131212100311⁴ (a number of 49 digits) contains 4444 as substring.

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 1131212100311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131212100371) 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, 4069108136 + ... + 4069108413.

It is an arithmetic number, because the mean of its divisors is an integer number (284837579250).

Almost surely, 2^{1131212100311} is an apocalyptic number.

1131212100311 is a deficient number, since it is larger than the sum of its proper divisors (8138216689).

1131212100311 is an equidigital number, since it uses as much as digits as its factorization.

1131212100311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8138216688.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1131212100311 its reverse (1130012121311), we get a palindrome (2261224221622).

The spelling of 1131212100311 in words is "one trillion, one hundred thirty-one billion, two hundred twelve million, one hundred thousand, three hundred eleven".