103131110312 has 8 divisors (see below), whose sum is σ = 193370831850. Its totient is φ = 51565555152.

The previous prime is 103131110311. The next prime is 103131110323. The reversal of 103131110312 is 213011131301.

It can be written as a sum of positive squares in only one way, i.e., 90910692196 + 12220418116 = 301514^2 + 110546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (103131110311) 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 as a sum of consecutive naturals, namely, 6445694387 + ... + 6445694402.

Almost surely, 2^103131110312 is an apocalyptic number.

It is an amenable number.

103131110312 is a deficient number, since it is larger than the sum of its proper divisors (90239721538).

103131110312 is a wasteful number, since it uses less digits than its factorization.

103131110312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12891388795 (or 12891388791 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 103131110312 its reverse (213011131301), we get a palindrome (316142241613).

The spelling of 103131110312 in words is "one hundred three billion, one hundred thirty-one million, one hundred ten thousand, three hundred twelve".