7287991343 has 16 divisors (see below), whose sum is σ = 7621000320. Its totient is φ = 6962436000.

The previous prime is 7287991331. The next prime is 7287991411. The reversal of 7287991343 is 3431997827.

It is a cyclic number.

It is not a de Polignac number, because 7287991343 - 2⁶ = 7287991279 is a prime.

It is a super-2 number, since 2×7287991343² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7287996343) 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 15 ways as a sum of consecutive naturals, for example, 2554868 + ... + 2557718.

It is an arithmetic number, because the mean of its divisors is an integer number (476312520).

Almost surely, 2^7287991343 is an apocalyptic number.

7287991343 is a deficient number, since it is larger than the sum of its proper divisors (333008977).

7287991343 is a wasteful number, since it uses less digits than its factorization.

7287991343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4118.

The product of its digits is 2286144, while the sum is 53.

The square root of 7287991343 is about 85369.7331786858. The cubic root of 7287991343 is about 1938.8131174137.

The spelling of 7287991343 in words is "seven billion, two hundred eighty-seven million, nine hundred ninety-one thousand, three hundred forty-three".