31577446852 has 48 divisors (see below), whose sum is σ = 64500613632. Its totient is φ = 13246047360.

The previous prime is 31577446801. The next prime is 31577446913. The reversal of 31577446852 is 25864477513.

It is a self number, because there is not a number n which added to its sum of digits gives 31577446852.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 599493 + ... + 650035.

It is an arithmetic number, because the mean of its divisors is an integer number (1343762784).

Almost surely, 2^31577446852 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 31577446852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32250306816).

31577446852 is an abundant number, since it is smaller than the sum of its proper divisors (32923166780).

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

31577446852 is a wasteful number, since it uses less digits than its factorization.

31577446852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51028 (or 51026 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 52.

The spelling of 31577446852 in words is "thirty-one billion, five hundred seventy-seven million, four hundred forty-six thousand, eight hundred fifty-two".