31214899512 has 384 divisors, whose sum is σ = 95831424000. Its totient is φ = 9132963840.

The previous prime is 31214899483. The next prime is 31214899517. The reversal of 31214899512 is 21599841213.

31214899512 is a `hidden beast` number, since 3 + 1 + 2 + 1 + 48 + 99 + 512 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31214899517) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 198820938 + ... + 198821094.

It is an arithmetic number, because the mean of its divisors is an integer number (249561000).

Almost surely, 2^31214899512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31214899512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47915712000).

31214899512 is an abundant number, since it is smaller than the sum of its proper divisors (64616524488).

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

31214899512 is a wasteful number, since it uses less digits than its factorization.

31214899512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 364 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The spelling of 31214899512 in words is "thirty-one billion, two hundred fourteen million, eight hundred ninety-nine thousand, five hundred twelve".