1321384339 has 12 divisors (see below), whose sum is σ = 1506916152. Its totient is φ = 1149024800.

The previous prime is 1321384307. The next prime is 1321384399. The reversal of 1321384339 is 9334831231.

It is a happy number.

It is not a de Polignac number, because 1321384339 - 2⁵ = 1321384307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321384298 and 1321384307.

It is not an unprimeable number, because it can be changed into a prime (1321384399) 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, 107722 + ... + 119359.

It is an arithmetic number, because the mean of its divisors is an integer number (125576346).

Almost surely, 2^1321384339 is an apocalyptic number.

1321384339 is a deficient number, since it is larger than the sum of its proper divisors (185531813).

1321384339 is a wasteful number, since it uses less digits than its factorization.

1321384339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227138 (or 227115 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 1321384339 is about 36350.8505952749. The cubic root of 1321384339 is about 1097.3446528530.

The spelling of 1321384339 in words is "one billion, three hundred twenty-one million, three hundred eighty-four thousand, three hundred thirty-nine".