31022231212000 has 96 divisors (see below), whose sum is σ = 87110425321920. Its totient is φ = 10636193548800.

The previous prime is 31022231211997. The next prime is 31022231212009. The reversal of 31022231212000 is 21213222013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31022231212009) 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 in 15 ways as a sum of consecutive naturals, for example, 553940415 + ... + 553996414.

It is an arithmetic number, because the mean of its divisors is an integer number (907400263770).

Almost surely, 2^{31022231212000} is an apocalyptic number.

It is an amenable number.

31022231212000 is an abundant number, since it is smaller than the sum of its proper divisors (56088194109920).

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

31022231212000 is a wasteful number, since it uses less digits than its factorization.

31022231212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107936861 (or 1107936843 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31022231212000 its reverse (21213222013), we get a palindrome (31043444434013).

The spelling of 31022231212000 in words is "thirty-one trillion, twenty-two billion, two hundred thirty-one million, two hundred twelve thousand".