11031131313 has 8 divisors (see below), whose sum is σ = 16342416800. Its totient is φ = 7354087524.

The previous prime is 11031131311. The next prime is 11031131329. The reversal of 11031131313 is 31313113011.

11031131313 is a `hidden beast` number, since 1 + 10 + 311 + 31 + 313 = 666.

It is not a de Polignac number, because 11031131313 - 2¹ = 11031131311 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11031131311) 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, 204280183 + ... + 204280236.

It is an arithmetic number, because the mean of its divisors is an integer number (2042802100).

Almost surely, 2^11031131313 is an apocalyptic number.

It is an amenable number.

11031131313 is a deficient number, since it is larger than the sum of its proper divisors (5311285487).

11031131313 is an equidigital number, since it uses as much as digits as its factorization.

11031131313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408560428 (or 408560422 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

Adding to 11031131313 its reverse (31313113011), we get a palindrome (42344244324).

The spelling of 11031131313 in words is "eleven billion, thirty-one million, one hundred thirty-one thousand, three hundred thirteen".