31820030485 has 8 divisors (see below), whose sum is σ = 38187978840. Its totient is φ = 25453396224.

The previous prime is 31820030477. The next prime is 31820030491. The reversal of 31820030485 is 58403002813.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6717113764 + 25102916721 = 81958^2 + 158439^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31820030485 - 2³ = 31820030477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31820030485.

It is a congruent number.

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, 274440 + ... + 372769.

It is an arithmetic number, because the mean of its divisors is an integer number (4773497355).

Almost surely, 2^31820030485 is an apocalyptic number.

It is an amenable number.

31820030485 is a deficient number, since it is larger than the sum of its proper divisors (6367948355).

31820030485 is an equidigital number, since it uses as much as digits as its factorization.

31820030485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657047.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 31820030485 in words is "thirty-one billion, eight hundred twenty million, thirty thousand, four hundred eighty-five".