31321332310012 has 12 divisors (see below), whose sum is σ = 54812801319136. Its totient is φ = 15660531933120.

The previous prime is 31321332309959. The next prime is 31321332310013. The reversal of 31321332310012 is 21001323312313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321332310013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33029508 + ... + 33964555.

Almost surely, 2^{31321332310012} is an apocalyptic number.

It is an amenable number.

31321332310012 is a deficient number, since it is larger than the sum of its proper divisors (23491469009124).

31321332310012 is a wasteful number, since it uses less digits than its factorization.

31321332310012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67110948 (or 67110946 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31321332310012 its reverse (21001323312313), we get a palindrome (52322655622325).

The spelling of 31321332310012 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred thirty-two million, three hundred ten thousand, twelve".