8131433091 has 16 divisors (see below), whose sum is σ = 11010777600. Its totient is φ = 5336625888.

The previous prime is 8131433077. The next prime is 8131433099. The reversal of 8131433091 is 1903341318.

It is not a de Polignac number, because 8131433091 - 2¹¹ = 8131431043 is a prime.

It is a super-2 number, since 2×8131433091² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8131433099) 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, 323350 + ... + 347588.

It is an arithmetic number, because the mean of its divisors is an integer number (688173600).

Almost surely, 2^8131433091 is an apocalyptic number.

8131433091 is a deficient number, since it is larger than the sum of its proper divisors (2879344509).

8131433091 is a wasteful number, since it uses less digits than its factorization.

8131433091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25978.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 8131433091 is about 90174.4591943861. The cubic root of 8131433091 is about 2010.8933176776.

The spelling of 8131433091 in words is "eight billion, one hundred thirty-one million, four hundred thirty-three thousand, ninety-one".