11031313121 has 8 divisors (see below), whose sum is σ = 11181530304. Its totient is φ = 10881508240.

The previous prime is 11031313087. The next prime is 11031313123. The reversal of 11031313121 is 12131313011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11031313121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11031313121.

It is not an unprimeable number, because it can be changed into a prime (11031313123) 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, 49010 + ... + 156411.

It is an arithmetic number, because the mean of its divisors is an integer number (1397691288).

Almost surely, 2^11031313121 is an apocalyptic number.

It is an amenable number.

11031313121 is a deficient number, since it is larger than the sum of its proper divisors (150217183).

11031313121 is an equidigital number, since it uses as much as digits as its factorization.

11031313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206151.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11031313121 its reverse (12131313011), we get a palindrome (23162626132).

The spelling of 11031313121 in words is "eleven billion, thirty-one million, three hundred thirteen thousand, one hundred twenty-one".