11203001031 has 4 divisors (see below), whose sum is σ = 14937334712. Its totient is φ = 7468667352.

The previous prime is 11203001021. The next prime is 11203001053. The reversal of 11203001031 is 13010030211.

11203001031 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 not a de Polignac number, because 11203001031 - 2⁶ = 11203000967 is a prime.

It is a super-2 number, since 2×11203001031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11203000998 and 11203001016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203001021) 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, 1867166836 + ... + 1867166841.

It is an arithmetic number, because the mean of its divisors is an integer number (3734333678).

Almost surely, 2^11203001031 is an apocalyptic number.

11203001031 is a deficient number, since it is larger than the sum of its proper divisors (3734333681).

11203001031 is an equidigital number, since it uses as much as digits as its factorization.

11203001031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734333680.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 11203001031 its reverse (13010030211), we get a palindrome (24213031242).

The spelling of 11203001031 in words is "eleven billion, two hundred three million, one thousand, thirty-one".