321133321987 has 8 divisors (see below), whose sum is σ = 340472703456. Its totient is φ = 301843850112.

The previous prime is 321133321979. The next prime is 321133322011. The reversal of 321133321987 is 789123331123.

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 321133321987 - 2³ = 321133321979 is a prime.

It is a super-2 number, since 2×321133321987² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321133321387) by changing a digit.

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, 12464143 + ... + 12489880.

It is an arithmetic number, because the mean of its divisors is an integer number (42559087932).

Almost surely, 2^321133321987 is an apocalyptic number.

321133321987 is a deficient number, since it is larger than the sum of its proper divisors (19339381469).

321133321987 is a wasteful number, since it uses less digits than its factorization.

321133321987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24954797.

The product of its digits is 163296, while the sum is 43.

The spelling of 321133321987 in words is "three hundred twenty-one billion, one hundred thirty-three million, three hundred twenty-one thousand, nine hundred eighty-seven".