1320086291 has 2 divisors, whose sum is σ = 1320086292. Its totient is φ = 1320086290.

The previous prime is 1320086281. The next prime is 1320086303. The reversal of 1320086291 is 1926800231.

It is a weak prime.

It is an emirp because it is prime and its reverse (1926800231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1320086291 - 2¹⁰ = 1320085267 is a prime.

It is a super-2 number, since 2×1320086291² = 3485255631372273362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1320086221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660043145 + 660043146.

It is an arithmetic number, because the mean of its divisors is an integer number (660043146).

Almost surely, 2^1320086291 is an apocalyptic number.

1320086291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320086291 is an equidigital number, since it uses as much as digits as its factorization.

1320086291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1320086291 is about 36332.9917705658. The cubic root of 1320086291 is about 1096.9852134729.

The spelling of 1320086291 in words is "one billion, three hundred twenty million, eighty-six thousand, two hundred ninety-one".