321103130985 has 160 divisors (see below), whose sum is σ = 739243169280. Its totient is φ = 129606884352.

The previous prime is 321103130947. The next prime is 321103130993. The reversal of 321103130985 is 589031301123.

321103130985 is a `hidden beast` number, since 321 + 10 + 313 + 0 + 9 + 8 + 5 = 666.

It is not a de Polignac number, because 321103130985 - 2⁹ = 321103130473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 658261 + ... + 1037069.

It is an arithmetic number, because the mean of its divisors is an integer number (4620269808).

Almost surely, 2^321103130985 is an apocalyptic number.

321103130985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

321103130985 is an abundant number, since it is smaller than the sum of its proper divisors (418140038295).

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

321103130985 is a wasteful number, since it uses less digits than its factorization.

321103130985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378869 (or 378860 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 321103130985 in words is "three hundred twenty-one billion, one hundred three million, one hundred thirty thousand, nine hundred eighty-five".