31132130012 has 12 divisors (see below), whose sum is σ = 54484057320. Its totient is φ = 15565256496.

The previous prime is 31132129999. The next prime is 31132130023. The reversal of 31132130012 is 21003123113.

It is a super-2 number, since 2×31132130012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110918 + ... + 273069.

It is an arithmetic number, because the mean of its divisors is an integer number (4540338110).

Almost surely, 2^31132130012 is an apocalyptic number.

It is an amenable number.

31132130012 is a deficient number, since it is larger than the sum of its proper divisors (23351927308).

31132130012 is a wasteful number, since it uses less digits than its factorization.

31132130012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404260 (or 404258 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31132130012 its reverse (21003123113), we get a palindrome (52135253125).

The spelling of 31132130012 in words is "thirty-one billion, one hundred thirty-two million, one hundred thirty thousand, twelve".