1131211312213 has 8 divisors (see below), whose sum is σ = 1181058717888. Its totient is φ = 1081419265344.

The previous prime is 1131211312193. The next prime is 1131211312219. The reversal of 1131211312213 is 3122131121311.

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

It is a de Polignac number, because none of the positive numbers 2^k-1131211312213 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 (1131211312219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13797931 + ... + 13879672.

It is an arithmetic number, because the mean of its divisors is an integer number (147632339736).

Almost surely, 2^{1131211312213} is an apocalyptic number.

It is an amenable number.

1131211312213 is a deficient number, since it is larger than the sum of its proper divisors (49847405675).

1131211312213 is a wasteful number, since it uses less digits than its factorization.

1131211312213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27679403.

The product of its digits is 216, while the sum is 22.

Adding to 1131211312213 its reverse (3122131121311), we get a palindrome (4253342433524).

The spelling of 1131211312213 in words is "one trillion, one hundred thirty-one billion, two hundred eleven million, three hundred twelve thousand, two hundred thirteen".