31130230113 has 6 divisors (see below), whose sum is σ = 44965887954. Its totient is φ = 20753486736.

The previous prime is 31130230111. The next prime is 31130230139. The reversal of 31130230113 is 31103203113.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18668303424 + 12461926689 = 136632^2 + 111633^2 .

It is not a de Polignac number, because 31130230113 - 2¹ = 31130230111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31130230111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1729457220 + ... + 1729457237.

It is an arithmetic number, because the mean of its divisors is an integer number (7494314659).

Almost surely, 2^31130230113 is an apocalyptic number.

It is an amenable number.

31130230113 is a deficient number, since it is larger than the sum of its proper divisors (13835657841).

31130230113 is a wasteful number, since it uses less digits than its factorization.

31130230113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3458914463 (or 3458914460 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31130230113 its reverse (31103203113), we get a palindrome (62233433226).

The spelling of 31130230113 in words is "thirty-one billion, one hundred thirty million, two hundred thirty thousand, one hundred thirteen".