31286951388676 has 9 divisors (see below), whose sum is σ = 54752184507349. Its totient is φ = 15643470100864.

The previous prime is 31286951388673. The next prime is 31286951388691. The reversal of 31286951388676 is 67688315968213.

The square root of 31286951388676 is 5593474.

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., 844983792900 + 30441967595776 = 919230^2 + 5517424^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31286951388599 and 31286951388608.

It is not an unprimeable number, because it can be changed into a prime (31286951388673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9788580 + ... + 12585316.

Almost surely, 2^{31286951388676} is an apocalyptic number.

31286951388676 is the 5593474-th square number.

It is an amenable number.

31286951388676 is a deficient number, since it is larger than the sum of its proper divisors (23465233118673).

31286951388676 is an frugal number, since it uses more digits than its factorization.

31286951388676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5593478 (or 2796739 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 73.

The spelling of 31286951388676 in words is "thirty-one trillion, two hundred eighty-six billion, nine hundred fifty-one million, three hundred eighty-eight thousand, six hundred seventy-six".