31306640979852 has 240 divisors, whose sum is σ = 99000214593280. Its totient is φ = 8427158352000.

The previous prime is 31306640979851. The next prime is 31306640979907. The reversal of 31306640979852 is 25897904660313.

31306640979852 is a `hidden beast` number, since 3 + 1 + 30 + 66 + 409 + 7 + 98 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 31306640979852.

It is not an unprimeable number, because it can be changed into a prime (31306640979851) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5792727 + ... + 9806577.

It is a 2-persistent number, because it is pandigital, and so is 2⋅31306640979852 = 62613281959704, but 3⋅31306640979852 = 93919922939556 is not.

Almost surely, 2^{31306640979852} 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 31306640979852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49500107296640).

31306640979852 is an abundant number, since it is smaller than the sum of its proper divisors (67693573613428).

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

31306640979852 is a wasteful number, since it uses less digits than its factorization.

31306640979852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4014074 (or 4014063 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 63.

The spelling of 31306640979852 in words is "thirty-one trillion, three hundred six billion, six hundred forty million, nine hundred seventy-nine thousand, eight hundred fifty-two".