31331210012000 has 96 divisors (see below), whose sum is σ = 77441747423040. Its totient is φ = 12457438924800.

The previous prime is 31331210011963. The next prime is 31331210012057. The reversal of 31331210012000 is 21001213313.

It is a self number, because there is not a number n which added to its sum of digits gives 31331210012000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22783505 + ... + 24119504.

It is an arithmetic number, because the mean of its divisors is an integer number (806684868990).

Almost surely, 2^{31331210012000} is an apocalyptic number.

It is an amenable number.

31331210012000 is an abundant number, since it is smaller than the sum of its proper divisors (46110537411040).

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

31331210012000 is a wasteful number, since it uses less digits than its factorization.

31331210012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46903201 (or 46903183 counting only the distinct ones).

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

Adding to 31331210012000 its reverse (21001213313), we get a palindrome (31352211225313).

The spelling of 31331210012000 in words is "thirty-one trillion, three hundred thirty-one billion, two hundred ten million, twelve thousand".