805309531141 has 4 divisors (see below), whose sum is σ = 831287257984. Its totient is φ = 779331804300.

The previous prime is 805309531109. The next prime is 805309531163. The reversal of 805309531141 is 141135903508.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 805309531141 - 2⁵ = 805309531109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 805309531094 and 805309531103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805309501141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12988863375 + ... + 12988863436.

It is an arithmetic number, because the mean of its divisors is an integer number (207821814496).

Almost surely, 2^805309531141 is an apocalyptic number.

It is an amenable number.

805309531141 is a deficient number, since it is larger than the sum of its proper divisors (25977726843).

805309531141 is a wasteful number, since it uses less digits than its factorization.

805309531141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25977726842.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 805309531141 in words is "eight hundred five billion, three hundred nine million, five hundred thirty-one thousand, one hundred forty-one".