31860876967936 has 153 divisors (see below), whose sum is σ = 67742296421079. Its totient is φ = 14981793841152.

The previous prime is 31860876967921. The next prime is 31860876967939. The reversal of 31860876967936 is 63976967806813.

The square root of 31860876967936 is 5644544.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 23283944718336 + 8576932249600 = 4825344^2 + 2928640^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31860876967939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24565054840 + ... + 24565056136.

Almost surely, 2^{31860876967936} is an apocalyptic number.

31860876967936 is the 5644544-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31860876967936

31860876967936 is an abundant number, since it is smaller than the sum of its proper divisors (35881419453143).

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

31860876967936 is an frugal number, since it uses more digits than its factorization.

31860876967936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 2962842624, while the sum is 79.

The spelling of 31860876967936 in words is "thirty-one trillion, eight hundred sixty billion, eight hundred seventy-six million, nine hundred sixty-seven thousand, nine hundred thirty-six".