11311103112 has 32 divisors (see below), whose sum is σ = 28281156480. Its totient is φ = 3769914560.

The previous prime is 11311103077. The next prime is 11311103129. The reversal of 11311103112 is 21130111311.

It is a super-2 number, since 2×11311103112² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11311103091 and 11311103100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219937 + ... + 266447.

It is an arithmetic number, because the mean of its divisors is an integer number (883786140).

Almost surely, 2^11311103112 is an apocalyptic number.

11311103112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11311103112 is an abundant number, since it is smaller than the sum of its proper divisors (16970053368).

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

11311103112 is a wasteful number, since it uses less digits than its factorization.

11311103112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56653 (or 56649 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 11311103112 its reverse (21130111311), we get a palindrome (32441214423).

The spelling of 11311103112 in words is "eleven billion, three hundred eleven million, one hundred three thousand, one hundred twelve".