1383887321 has 2 divisors, whose sum is σ = 1383887322. Its totient is φ = 1383887320.

The previous prime is 1383887273. The next prime is 1383887369. The reversal of 1383887321 is 1237883831.

It is a balanced prime because it is at equal distance from previous prime (1383887273) and next prime (1383887369).

It can be written as a sum of positive squares in only one way, i.e., 1063477321 + 320410000 = 32611^2 + 17900^2 .

It is a cyclic number.

It is not a de Polignac number, because 1383887321 - 2¹⁰ = 1383886297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1383887371) 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 as a sum of consecutive naturals, namely, 691943660 + 691943661.

It is an arithmetic number, because the mean of its divisors is an integer number (691943661).

Almost surely, 2^1383887321 is an apocalyptic number.

It is an amenable number.

1383887321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1383887321 is an equidigital number, since it uses as much as digits as its factorization.

1383887321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 1383887321 is about 37200.6360295090. The cubic root of 1383887321 is about 1114.3806868606.

The spelling of 1383887321 in words is "one billion, three hundred eighty-three million, eight hundred eighty-seven thousand, three hundred twenty-one".