1131311131213 has 8 divisors (see below), whose sum is σ = 1157715023168. Its totient is φ = 1104911527104.

The previous prime is 1131311131207. The next prime is 1131311131303. The reversal of 1131311131213 is 3121311131311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131311131213 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 (1131311137213) 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, 535020 + ... + 1596517.

It is an arithmetic number, because the mean of its divisors is an integer number (144714377896).

Almost surely, 2^{1131311131213} is an apocalyptic number.

It is an amenable number.

1131311131213 is a deficient number, since it is larger than the sum of its proper divisors (26403891955).

1131311131213 is a wasteful number, since it uses less digits than its factorization.

1131311131213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143923.

The product of its digits is 162, while the sum is 22.

Adding to 1131311131213 its reverse (3121311131311), we get a palindrome (4252622262524).

The spelling of 1131311131213 in words is "one trillion, one hundred thirty-one billion, three hundred eleven million, one hundred thirty-one thousand, two hundred thirteen".