103111312 has 40 divisors (see below), whose sum is σ = 204361920. Its totient is φ = 50386560.

The previous prime is 103111303. The next prime is 103111313. The reversal of 103111312 is 213111301.

It is a super-2 number, since 2×103111312² = 21263885324722688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103111292 and 103111301.

It is not an unprimeable number, because it can be changed into a prime (103111313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157578 + ... + 158230.

It is an arithmetic number, because the mean of its divisors is an integer number (5109048).

Almost surely, 2^103111312 is an apocalyptic number.

It is an amenable number.

103111312 is a deficient number, since it is larger than the sum of its proper divisors (101250608).

103111312 is a wasteful number, since it uses less digits than its factorization.

103111312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 103111312 is about 10154.3740328983. The cubic root of 103111312 is about 468.9236149303.

Adding to 103111312 its reverse (213111301), we get a palindrome (316222613).

The spelling of 103111312 in words is "one hundred three million, one hundred eleven thousand, three hundred twelve".