31872861760159 has 32 divisors (see below), whose sum is σ = 38120596125696. Its totient is φ = 26077891265280.

The previous prime is 31872861760147. The next prime is 31872861760211. The reversal of 31872861760159 is 95106716827813.

It is a cyclic number.

It is not a de Polignac number, because 31872861760159 - 2²⁹ = 31872324889247 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 31872861760159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31872861760109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42292189 + ... + 43039225.

It is an arithmetic number, because the mean of its divisors is an integer number (1191268628928).

Almost surely, 2^{31872861760159} is an apocalyptic number.

31872861760159 is a deficient number, since it is larger than the sum of its proper divisors (6247734365537).

31872861760159 is a wasteful number, since it uses less digits than its factorization.

31872861760159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750295.

The product of its (nonzero) digits is 30481920, while the sum is 64.

The spelling of 31872861760159 in words is "thirty-one trillion, eight hundred seventy-two billion, eight hundred sixty-one million, seven hundred sixty thousand, one hundred fifty-nine".