11203131011311 has 4 divisors (see below), whose sum is σ = 11589445873800. Its totient is φ = 10816816148824.

The previous prime is 11203131011309. The next prime is 11203131011351. The reversal of 11203131011311 is 11311013130211.

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 11203131011311 - 2¹ = 11203131011309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203131011351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193157431201 + ... + 193157431258.

It is an arithmetic number, because the mean of its divisors is an integer number (2897361468450).

Almost surely, 2^{11203131011311} is an apocalyptic number.

11203131011311 is a deficient number, since it is larger than the sum of its proper divisors (386314862489).

11203131011311 is an equidigital number, since it uses as much as digits as its factorization.

11203131011311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386314862488.

The product of its (nonzero) digits is 54, while the sum is 19.

Adding to 11203131011311 its reverse (11311013130211), we get a palindrome (22514144141522).

The spelling of 11203131011311 in words is "eleven trillion, two hundred three billion, one hundred thirty-one million, eleven thousand, three hundred eleven".