11320213131 has 32 divisors (see below), whose sum is σ = 17100357120. Its totient is φ = 7398679392.

The previous prime is 11320213127. The next prime is 11320213139. The reversal of 11320213131 is 13131202311.

11320213131 is a `hidden beast` number, since 1 + 1 + 320 + 213 + 131 = 666.

It is not a de Polignac number, because 11320213131 - 2² = 11320213127 is a prime.

It is a super-2 number, since 2×11320213131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11320213139) 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 31 ways as a sum of consecutive naturals, for example, 2640916 + ... + 2645198.

It is an arithmetic number, because the mean of its divisors is an integer number (534386160).

Almost surely, 2^11320213131 is an apocalyptic number.

11320213131 is a deficient number, since it is larger than the sum of its proper divisors (5780143989).

11320213131 is a wasteful number, since it uses less digits than its factorization.

11320213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6192 (or 6186 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11320213131 its reverse (13131202311), we get a palindrome (24451415442).

The spelling of 11320213131 in words is "eleven billion, three hundred twenty million, two hundred thirteen thousand, one hundred thirty-one".