31286996136484 has 27 divisors (see below), whose sum is σ = 60182454481681. Its totient is φ = 14221305945440.

The previous prime is 31286996136479. The next prime is 31286996136491. The reversal of 31286996136484 is 48463169968213.

The square root of 31286996136484 is 5593478.

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

It can be written as a sum of positive squares in only one way, i.e., 2092425896484 + 29194570240000 = 1446522^2 + 5403200^2 .

It is a super-2 number, since 2×31286996136484² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 122929392 + ... + 123183640.

Almost surely, 2^{31286996136484} is an apocalyptic number.

31286996136484 is the 5593478-th square number.

It is an amenable number.

31286996136484 is a deficient number, since it is larger than the sum of its proper divisors (28895458345197).

31286996136484 is an frugal number, since it uses more digits than its factorization.

31286996136484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508524 (or 254262 counting only the distinct ones).

The product of its digits is 322486272, while the sum is 70.

The spelling of 31286996136484 in words is "thirty-one trillion, two hundred eighty-six billion, nine hundred ninety-six million, one hundred thirty-six thousand, four hundred eighty-four".