11213131311 has 12 divisors (see below), whose sum is σ = 16634495592. Its totient is φ = 7273382256.

The previous prime is 11213131283. The next prime is 11213131313. The reversal of 11213131311 is 11313131211.

11213131311 is a `hidden beast` number, since 11 + 213 + 131 + 311 = 666.

It is not a de Polignac number, because 11213131311 - 2⁷ = 11213131183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213131313) 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 11 ways as a sum of consecutive naturals, for example, 16836201 + ... + 16836866.

It is an arithmetic number, because the mean of its divisors is an integer number (1386207966).

Almost surely, 2^11213131311 is an apocalyptic number.

11213131311 is a deficient number, since it is larger than the sum of its proper divisors (5421364281).

11213131311 is a wasteful number, since it uses less digits than its factorization.

11213131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33673110 (or 33673107 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

Adding to 11213131311 its reverse (11313131211), we get a palindrome (22526262522).

The spelling of 11213131311 in words is "eleven billion, two hundred thirteen million, one hundred thirty-one thousand, three hundred eleven".