31204212984 has 128 divisors (see below), whose sum is σ = 99149760000. Its totient is φ = 8907501312.

The previous prime is 31204212983. The next prime is 31204213043. The reversal of 31204212984 is 48921240213.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204212983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1795167 + ... + 1812465.

It is an arithmetic number, because the mean of its divisors is an integer number (774607500).

Almost surely, 2^31204212984 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 31204212984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49574880000).

31204212984 is an abundant number, since it is smaller than the sum of its proper divisors (67945547016).

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

31204212984 is a wasteful number, since it uses less digits than its factorization.

31204212984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18514 (or 18504 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 31204212984 in words is "thirty-one billion, two hundred four million, two hundred twelve thousand, nine hundred eighty-four".