31445524212 has 12 divisors (see below), whose sum is σ = 73372889856. Its totient is φ = 10481841400.

The previous prime is 31445524207. The next prime is 31445524213. The reversal of 31445524212 is 21242554413.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31445524213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1310230164 + ... + 1310230187.

It is an arithmetic number, because the mean of its divisors is an integer number (6114407488).

Almost surely, 2^31445524212 is an apocalyptic number.

It is an amenable number.

31445524212 is an abundant number, since it is smaller than the sum of its proper divisors (41927365644).

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

31445524212 is a wasteful number, since it uses less digits than its factorization.

31445524212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620460358 (or 2620460356 counting only the distinct ones).

The product of its digits is 38400, while the sum is 33.

The spelling of 31445524212 in words is "thirty-one billion, four hundred forty-five million, five hundred twenty-four thousand, two hundred twelve".