11311320112 has 20 divisors (see below), whose sum is σ = 21918514536. Its totient is φ = 5654929280.

The previous prime is 11311320101. The next prime is 11311320131. The reversal of 11311320112 is 21102311311.

It is a happy number.

It is a super-2 number, since 2×11311320112² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95187 + ... + 177997.

Almost surely, 2^11311320112 is an apocalyptic number.

It is an amenable number.

11311320112 is a deficient number, since it is larger than the sum of its proper divisors (10607194424).

11311320112 is an equidigital number, since it uses as much as digits as its factorization.

11311320112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91356 (or 91350 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11311320112 its reverse (21102311311), we get a palindrome (32413631423).

It can be divided in two parts, 113113 and 20112, that added together give a square (133225 = 365²).

The spelling of 11311320112 in words is "eleven billion, three hundred eleven million, three hundred twenty thousand, one hundred twelve".