1320051329 has 2 divisors, whose sum is σ = 1320051330. Its totient is φ = 1320051328.

The previous prime is 1320051323. The next prime is 1320051347. The reversal of 1320051329 is 9231500231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1154980225 + 165071104 = 33985^2 + 12848^2 .

It is an emirp because it is prime and its reverse (9231500231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1320051329 - 2²⁰ = 1319002753 is a prime.

It is a super-2 number, since 2×1320051329² = 3485071022389332482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320051298 and 1320051307.

It is not a weakly prime, because it can be changed into another prime (1320051323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660025664 + 660025665.

It is an arithmetic number, because the mean of its divisors is an integer number (660025665).

Almost surely, 2^1320051329 is an apocalyptic number.

It is an amenable number.

1320051329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320051329 is an equidigital number, since it uses as much as digits as its factorization.

1320051329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1320051329 is about 36332.5106344167. The cubic root of 1320051329 is about 1096.9755289707.

The spelling of 1320051329 in words is "one billion, three hundred twenty million, fifty-one thousand, three hundred twenty-nine".