11203011312 has 20 divisors (see below), whose sum is σ = 28941112680. Its totient is φ = 3734337088.

The previous prime is 11203011311. The next prime is 11203011329. The reversal of 11203011312 is 21311030211.

It is a happy number.

It is a super-2 number, since 2×11203011312² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11203011291 and 11203011300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203011311) 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, 116697987 + ... + 116698082.

It is an arithmetic number, because the mean of its divisors is an integer number (1447055634).

Almost surely, 2^11203011312 is an apocalyptic number.

11203011312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11203011312 is an abundant number, since it is smaller than the sum of its proper divisors (17738101368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11203011312 is a wasteful number, since it uses less digits than its factorization.

11203011312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233396080 (or 233396074 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11203011312 its reverse (21311030211), we get a palindrome (32514041523).

The spelling of 11203011312 in words is "eleven billion, two hundred three million, eleven thousand, three hundred twelve".