1309049504343 has 72 divisors (see below), whose sum is σ = 2326634695008. Its totient is φ = 705703477248.

The previous prime is 1309049504341. The next prime is 1309049504363. The reversal of 1309049504343 is 3434059409031.

It is a happy number.

1309049504343 is a `hidden beast` number, since 1 + 30 + 90 + 495 + 0 + 4 + 3 + 43 = 666.

It is not a de Polignac number, because 1309049504343 - 2¹ = 1309049504341 is a prime.

It is a super-3 number, since 3×1309049504343³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309049504341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 143530 + ... + 1624407.

It is an arithmetic number, because the mean of its divisors is an integer number (32314370764).

Almost surely, 2^{1309049504343} is an apocalyptic number.

1309049504343 is a deficient number, since it is larger than the sum of its proper divisors (1017585190665).

1309049504343 is a wasteful number, since it uses less digits than its factorization.

1309049504343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768053 (or 1768043 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The spelling of 1309049504343 in words is "one trillion, three hundred nine billion, forty-nine million, five hundred four thousand, three hundred forty-three".