831601326408 has 32 divisors (see below), whose sum is σ = 2079102933600. Its totient is φ = 277187159808.

The previous prime is 831601326379. The next prime is 831601326427. The reversal of 831601326408 is 804623106138.

It is a self number, because there is not a number n which added to its sum of digits gives 831601326408.

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 7 ways as a sum of consecutive naturals, for example, 312241 + ... + 1326912.

It is an arithmetic number, because the mean of its divisors is an integer number (64971966675).

Almost surely, 2^831601326408 is an apocalyptic number.

It is an amenable number.

831601326408 is an abundant number, since it is smaller than the sum of its proper divisors (1247501607192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

831601326408 is a wasteful number, since it uses less digits than its factorization.

831601326408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660301 (or 1660297 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 831601326408 in words is "eight hundred thirty-one billion, six hundred one million, three hundred twenty-six thousand, four hundred eight".