31130330123312 has 40 divisors (see below), whose sum is σ = 68934211264416. Its totient is φ = 13341034699776.

The previous prime is 31130330123287. The next prime is 31130330123341. The reversal of 31130330123312 is 21332103303113.

It is a super-2 number, since 2×31130330123312² (a number of 28 digits) contains 22 as substring.

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, 2766683 + ... + 8361530.

Almost surely, 2^{31130330123312} is an apocalyptic number.

It is an amenable number.

31130330123312 is an abundant number, since it is smaller than the sum of its proper divisors (37803881141104).

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

31130330123312 is a wasteful number, since it uses less digits than its factorization.

31130330123312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11153205 (or 11153199 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 31130330123312 its reverse (21332103303113), we get a palindrome (52462433426425).

The spelling of 31130330123312 in words is "thirty-one trillion, one hundred thirty billion, three hundred thirty million, one hundred twenty-three thousand, three hundred twelve".