31486382705 has 8 divisors (see below), whose sum is σ = 37785028392. Its totient is φ = 25188193408.

The previous prime is 31486382659. The next prime is 31486382783. The reversal of 31486382705 is 50728368413.

It can be written as a sum of positive squares in 4 ways, for example, as 3543582784 + 27942799921 = 59528^2 + 167161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31486382705 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31486382705.

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 7 ways as a sum of consecutive naturals, for example, 62549 + ... + 258621.

It is an arithmetic number, because the mean of its divisors is an integer number (4723128549).

Almost surely, 2^31486382705 is an apocalyptic number.

It is an amenable number.

31486382705 is a deficient number, since it is larger than the sum of its proper divisors (6298645687).

31486382705 is a wasteful number, since it uses less digits than its factorization.

31486382705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228195.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 31486382705 in words is "thirty-one billion, four hundred eighty-six million, three hundred eighty-two thousand, seven hundred five".