103612021312 has 28 divisors (see below), whose sum is σ = 206405157420. Its totient is φ = 51604422656.

The previous prime is 103612021231. The next prime is 103612021319. The reversal of 103612021312 is 213120216301.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64670524416 + 38941496896 = 254304^2 + 197336^2 .

It is a super-3 number, since 3×103612021312³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (103612021319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3133237 + ... + 3166132.

It is an arithmetic number, because the mean of its divisors is an integer number (7371612765).

Almost surely, 2^103612021312 is an apocalyptic number.

It is an amenable number.

103612021312 is a deficient number, since it is larger than the sum of its proper divisors (102793136108).

103612021312 is an equidigital number, since it uses as much as digits as its factorization.

103612021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6299638 (or 6299628 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 103612021312 its reverse (213120216301), we get a palindrome (316732237613).

The spelling of 103612021312 in words is "one hundred three billion, six hundred twelve million, twenty-one thousand, three hundred twelve".