31270066820 has 24 divisors (see below), whose sum is σ = 65670672984. Its totient is φ = 12507353856.

The previous prime is 31270066813. The next prime is 31270066853. The reversal of 31270066820 is 2866007213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 787700356 + 30482366464 = 28066^2 + 174592^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 526472 + ... + 582848.

It is an arithmetic number, because the mean of its divisors is an integer number (2736278041).

Almost surely, 2^31270066820 is an apocalyptic number.

It is an amenable number.

31270066820 is an abundant number, since it is smaller than the sum of its proper divisors (34400606164).

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

31270066820 is a wasteful number, since it uses less digits than its factorization.

31270066820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84119 (or 84117 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 31270066820 in words is "thirty-one billion, two hundred seventy million, sixty-six thousand, eight hundred twenty".