831313887485 has 32 divisors (see below), whose sum is σ = 1028064016512. Its totient is φ = 644852102400.

The previous prime is 831313887463. The next prime is 831313887493. The reversal of 831313887485 is 584788313138.

It is not a de Polignac number, because 831313887485 - 2⁶ = 831313887421 is a prime.

It is a Duffinian number.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 211905734 + ... + 211909656.

It is an arithmetic number, because the mean of its divisors is an integer number (32127000516).

Almost surely, 2^831313887485 is an apocalyptic number.

It is an amenable number.

831313887485 is a deficient number, since it is larger than the sum of its proper divisors (196750129027).

831313887485 is a wasteful number, since it uses less digits than its factorization.

831313887485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7613.

The product of its digits is 15482880, while the sum is 59.

The spelling of 831313887485 in words is "eight hundred thirty-one billion, three hundred thirteen million, eight hundred eighty-seven thousand, four hundred eighty-five".