321343062665 has 8 divisors (see below), whose sum is σ = 385984974408. Its totient is φ = 256825584000.

The previous prime is 321343062653. The next prime is 321343062673. The reversal of 321343062665 is 566260343123.

It can be written as a sum of positive squares in 4 ways, for example, as 109971161161 + 211371901504 = 331619^2 + 459752^2 .

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

It is not a de Polignac number, because 321343062665 - 2³² = 317048095369 is a prime.

It is a super-2 number, since 2×321343062665² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31102586 + ... + 31112915.

It is an arithmetic number, because the mean of its divisors is an integer number (48248121801).

Almost surely, 2^321343062665 is an apocalyptic number.

It is an amenable number.

321343062665 is a deficient number, since it is larger than the sum of its proper divisors (64641911743).

321343062665 is a wasteful number, since it uses less digits than its factorization.

321343062665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62216539.

The product of its (nonzero) digits is 466560, while the sum is 41.

The spelling of 321343062665 in words is "three hundred twenty-one billion, three hundred forty-three million, sixty-two thousand, six hundred sixty-five".