103212318 has 32 divisors (see below), whose sum is σ = 227272320. Its totient is φ = 30987360.

The previous prime is 103212311. The next prime is 103212323. The reversal of 103212318 is 813212301.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 103212294 and 103212303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103212311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21 + ... + 14367.

It is an arithmetic number, because the mean of its divisors is an integer number (7102260).

Almost surely, 2^103212318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103212318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113636160).

103212318 is an abundant number, since it is smaller than the sum of its proper divisors (124060002).

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

103212318 is a wasteful number, since it uses less digits than its factorization.

103212318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14472.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 103212318 is about 10159.3463372404. The cubic root of 103212318 is about 469.0766813607.

Adding to 103212318 its reverse (813212301), we get a palindrome (916424619).

The spelling of 103212318 in words is "one hundred three million, two hundred twelve thousand, three hundred eighteen".