31211402352112 has 10 divisors (see below), whose sum is σ = 60472092057248. Its totient is φ = 15605701176048.

The previous prime is 31211402352083. The next prime is 31211402352113. The reversal of 31211402352112 is 21125320411213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31211402352113) by changing a digit.

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 as a sum of consecutive naturals, namely, 975356323488 + ... + 975356323519.

Almost surely, 2^{31211402352112} is an apocalyptic number.

It is an amenable number.

31211402352112 is a deficient number, since it is larger than the sum of its proper divisors (29260689705136).

31211402352112 is a wasteful number, since it uses less digits than its factorization.

31211402352112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950712647015 (or 1950712647009 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 31211402352112 its reverse (21125320411213), we get a palindrome (52336722763325).

The spelling of 31211402352112 in words is "thirty-one trillion, two hundred eleven billion, four hundred two million, three hundred fifty-two thousand, one hundred twelve".