1309731652209 has 16 divisors (see below), whose sum is σ = 1831970459520. Its totient is φ = 831171774720.

The previous prime is 1309731652181. The next prime is 1309731652237. The reversal of 1309731652209 is 9022561379031.

It is an interprime number because it is at equal distance from previous prime (1309731652181) and next prime (1309731652237).

It is not a de Polignac number, because 1309731652209 - 2²⁰ = 1309730603633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1309731652249) 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 in 15 ways as a sum of consecutive naturals, for example, 106010632 + ... + 106022985.

It is an arithmetic number, because the mean of its divisors is an integer number (114498153720).

Almost surely, 2^{1309731652209} is an apocalyptic number.

It is an amenable number.

1309731652209 is a deficient number, since it is larger than the sum of its proper divisors (522238807311).

1309731652209 is a wasteful number, since it uses less digits than its factorization.

1309731652209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212033720.

The product of its (nonzero) digits is 612360, while the sum is 48.

The spelling of 1309731652209 in words is "one trillion, three hundred nine billion, seven hundred thirty-one million, six hundred fifty-two thousand, two hundred nine".