321391869682 has 16 divisors (see below), whose sum is σ = 519218649432. Its totient is φ = 148321232640.

The previous prime is 321391869629. The next prime is 321391869707. The reversal of 321391869682 is 286968193123.

It can be written as a sum of positive squares in 4 ways, for example, as 221585791441 + 99806078241 = 470729^2 + 315921^2 .

It is a super-2 number, since 2×321391869682² (a number of 24 digits) contains 22 as substring.

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, 266919 + ... + 845002.

Almost surely, 2^321391869682 is an apocalyptic number.

321391869682 is a deficient number, since it is larger than the sum of its proper divisors (197826779750).

321391869682 is a wasteful number, since it uses less digits than its factorization.

321391869682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123053.

The product of its digits is 6718464, while the sum is 58.

The spelling of 321391869682 in words is "three hundred twenty-one billion, three hundred ninety-one million, eight hundred sixty-nine thousand, six hundred eighty-two".