31130230012 has 24 divisors (see below), whose sum is σ = 62539667456. Its totient is φ = 13281697008.

The previous prime is 31130230009. The next prime is 31130230063. The reversal of 31130230012 is 21003203113.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2486568 + ... + 2499055.

Almost surely, 2^31130230012 is an apocalyptic number.

It is an amenable number.

31130230012 is an abundant number, since it is smaller than the sum of its proper divisors (31409437444).

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

31130230012 is a wasteful number, since it uses less digits than its factorization.

31130230012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4985857 (or 4985855 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31130230012 its reverse (21003203113), we get a palindrome (52133433125).

The spelling of 31130230012 in words is "thirty-one billion, one hundred thirty million, two hundred thirty thousand, twelve".