103440012 has 48 divisors (see below), whose sum is σ = 266966112. Its totient is φ = 30965760.

The previous prime is 103439989. The next prime is 103440017. The reversal of 103440012 is 210044301.

It is a junction number, because it is equal to n+sod(n) for n = 103439973 and 103440000.

It is not an unprimeable number, because it can be changed into a prime (103440017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3189 + ... + 14732.

It is an arithmetic number, because the mean of its divisors is an integer number (5561794).

Almost surely, 2^103440012 is an apocalyptic number.

103440012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

103440012 is an abundant number, since it is smaller than the sum of its proper divisors (163526100).

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

103440012 is a wasteful number, since it uses less digits than its factorization.

103440012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17978 (or 17976 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 103440012 is about 10170.5462980117. The cubic root of 103440012 is about 469.4213672905.

Adding to 103440012 its reverse (210044301), we get a palindrome (313484313).

The spelling of 103440012 in words is "one hundred three million, four hundred forty thousand, twelve".