11311003131 has 4 divisors (see below), whose sum is σ = 15081337512. Its totient is φ = 7540668752.

The previous prime is 11311003129. The next prime is 11311003153. The reversal of 11311003131 is 13130011311.

11311003131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11311003131 - 2¹ = 11311003129 is a prime.

It is a super-2 number, since 2×11311003131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11311003131.

It is not an unprimeable number, because it can be changed into a prime (11311003331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1885167186 + ... + 1885167191.

It is an arithmetic number, because the mean of its divisors is an integer number (3770334378).

Almost surely, 2^11311003131 is an apocalyptic number.

11311003131 is a deficient number, since it is larger than the sum of its proper divisors (3770334381).

11311003131 is an equidigital number, since it uses as much as digits as its factorization.

11311003131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770334380.

The product of its (nonzero) digits is 27, while the sum is 15.

Adding to 11311003131 its reverse (13130011311), we get a palindrome (24441014442).

The spelling of 11311003131 in words is "eleven billion, three hundred eleven million, three thousand, one hundred thirty-one".