831064389129 has 24 divisors (see below), whose sum is σ = 1368811938312. Its totient is φ = 481340459520.

The previous prime is 831064389079. The next prime is 831064389143. The reversal of 831064389129 is 921983460138.

831064389129 is a `hidden beast` number, since 83 + 1 + 0 + 6 + 438 + 9 + 129 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 343574167104 + 487490222025 = 586152^2 + 698205^2 .

It is a de Polignac number, because none of the positive numbers 2^k-831064389129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (831064389149) 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 23 ways as a sum of consecutive naturals, for example, 208913142 + ... + 208917119.

It is an arithmetic number, because the mean of its divisors is an integer number (57033830763).

Almost surely, 2^831064389129 is an apocalyptic number.

It is an amenable number.

831064389129 is a deficient number, since it is larger than the sum of its proper divisors (537747549183).

831064389129 is a wasteful number, since it uses less digits than its factorization.

831064389129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417830297 (or 417830294 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 831064389129 in words is "eight hundred thirty-one billion, sixty-four million, three hundred eighty-nine thousand, one hundred twenty-nine".