103031231212 has 72 divisors (see below), whose sum is σ = 225954504384. Its totient is φ = 40745472768.

The previous prime is 103031231189. The next prime is 103031231213. The reversal of 103031231212 is 212132130301.

It is a self number, because there is not a number n which added to its sum of digits gives 103031231212.

It is not an unprimeable number, because it can be changed into a prime (103031231213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10332253 + ... + 10342219.

Almost surely, 2^103031231212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103031231212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112977252192).

103031231212 is an abundant number, since it is smaller than the sum of its proper divisors (122923273172).

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

103031231212 is a wasteful number, since it uses less digits than its factorization.

103031231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14055 (or 14046 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 103031231212 its reverse (212132130301), we get a palindrome (315163361513).

The spelling of 103031231212 in words is "one hundred three billion, thirty-one million, two hundred thirty-one thousand, two hundred twelve".