11031136205 has 8 divisors (see below), whose sum is σ = 14016031992. Its totient is φ = 8305796608.

The previous prime is 11031136163. The next prime is 11031136211. The reversal of 11031136205 is 50263113011.

It can be written as a sum of positive squares in 4 ways, for example, as 2675165284 + 8355970921 = 51722^2 + 91411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11031136205 - 2⁸ = 11031135949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64888952 + ... + 64889121.

It is an arithmetic number, because the mean of its divisors is an integer number (1752003999).

Almost surely, 2^11031136205 is an apocalyptic number.

It is an amenable number.

11031136205 is a deficient number, since it is larger than the sum of its proper divisors (2984895787).

11031136205 is a wasteful number, since it uses less digits than its factorization.

11031136205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129778095.

The product of its (nonzero) digits is 540, while the sum is 23.

Adding to 11031136205 its reverse (50263113011), we get a palindrome (61294249216).

The spelling of 11031136205 in words is "eleven billion, thirty-one million, one hundred thirty-six thousand, two hundred five".