11203031113 has 4 divisors (see below), whose sum is σ = 11207823120. Its totient is φ = 11198239108.

The previous prime is 11203031111. The next prime is 11203031137. The reversal of 11203031113 is 31113030211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31113030211 = 557 ⋅55858223.

It is a cyclic number.

It is not a de Polignac number, because 11203031113 - 2¹ = 11203031111 is a prime.

It is a super-2 number, since 2×11203031113² (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 (11203031111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2392495 + ... + 2397172.

It is an arithmetic number, because the mean of its divisors is an integer number (2801955780).

Almost surely, 2^11203031113 is an apocalyptic number.

It is an amenable number.

11203031113 is a deficient number, since it is larger than the sum of its proper divisors (4792007).

11203031113 is an equidigital number, since it uses as much as digits as its factorization.

11203031113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792006.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 11203031113 its reverse (31113030211), we get a palindrome (42316061324).

The spelling of 11203031113 in words is "eleven billion, two hundred three million, thirty-one thousand, one hundred thirteen".