1321438329 has 12 divisors (see below), whose sum is σ = 1909790896. Its totient is φ = 880475832.

The previous prime is 1321438319. The next prime is 1321438361. The reversal of 1321438329 is 9238341231.

1321438329 is a `hidden beast` number, since 1 + 321 + 4 + 3 + 8 + 329 = 666.

It is not a de Polignac number, because 1321438329 - 2⁸ = 1321438073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321438293 and 1321438302.

It is not an unprimeable number, because it can be changed into a prime (1321438309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22519 + ... + 56124.

Almost surely, 2^1321438329 is an apocalyptic number.

It is an amenable number.

1321438329 is a deficient number, since it is larger than the sum of its proper divisors (588352567).

1321438329 is a wasteful number, since it uses less digits than its factorization.

1321438329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80516 (or 80513 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 1321438329 is about 36351.5932113023. The cubic root of 1321438329 is about 1097.3595979953.

The spelling of 1321438329 in words is "one billion, three hundred twenty-one million, four hundred thirty-eight thousand, three hundred twenty-nine".