831172551053 has 4 divisors (see below), whose sum is σ = 895108901148. Its totient is φ = 767236200960.

The previous prime is 831172551029. The next prime is 831172551071. The reversal of 831172551053 is 350155271138.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350155271138 = 2 ⋅175077635569.

It can be written as a sum of positive squares in 2 ways, for example, as 55325155369 + 775847395684 = 235213^2 + 880822^2 .

It is a cyclic number.

It is not a de Polignac number, because 831172551053 - 2¹⁰ = 831172550029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 831172551053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831172511053) 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 3 ways as a sum of consecutive naturals, for example, 31968175028 + ... + 31968175053.

It is an arithmetic number, because the mean of its divisors is an integer number (223777225287).

Almost surely, 2^831172551053 is an apocalyptic number.

It is an amenable number.

831172551053 is a deficient number, since it is larger than the sum of its proper divisors (63936350095).

831172551053 is a wasteful number, since it uses less digits than its factorization.

831172551053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63936350094.

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 831172551053 in words is "eight hundred thirty-one billion, one hundred seventy-two million, five hundred fifty-one thousand, fifty-three".