1211131330313 has 24 divisors (see below), whose sum is σ = 1314532296000. Its totient is φ = 1115069620896.

The previous prime is 1211131330303. The next prime is 1211131330349. The reversal of 1211131330313 is 3130331311121.

It is not a de Polignac number, because 1211131330313 - 2²⁶ = 1211064221449 is a prime.

It is a super-2 number, since 2×1211131330313² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1211131330303) 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 23 ways as a sum of consecutive naturals, for example, 2893043 + ... + 3285111.

It is an arithmetic number, because the mean of its divisors is an integer number (54772179000).

Almost surely, 2^{1211131330313} is an apocalyptic number.

It is an amenable number.

1211131330313 is a deficient number, since it is larger than the sum of its proper divisors (103400965687).

1211131330313 is a wasteful number, since it uses less digits than its factorization.

1211131330313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392349 (or 392330 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 1211131330313 its reverse (3130331311121), we get a palindrome (4341462641434).

The spelling of 1211131330313 in words is "one trillion, two hundred eleven billion, one hundred thirty-one million, three hundred thirty thousand, three hundred thirteen".