11012231131 has 4 divisors (see below), whose sum is σ = 12013343064. Its totient is φ = 10011119200.

The previous prime is 11012231129. The next prime is 11012231141. The reversal of 11012231131 is 13113221011.

It is a happy number.

11012231131 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 11012231131 - 2¹ = 11012231129 is a prime.

It is a super-2 number, since 2×11012231131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012231141) 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, 500555950 + ... + 500555971.

It is an arithmetic number, because the mean of its divisors is an integer number (3003335766).

Almost surely, 2^11012231131 is an apocalyptic number.

11012231131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11012231131 is a deficient number, since it is larger than the sum of its proper divisors (1001111933).

11012231131 is a wasteful number, since it uses less digits than its factorization.

11012231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001111932.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11012231131 its reverse (13113221011), we get a palindrome (24125452142).

The spelling of 11012231131 in words is "eleven billion, twelve million, two hundred thirty-one thousand, one hundred thirty-one".