831000455381 has 8 divisors (see below), whose sum is σ = 839823946200. Its totient is φ = 822188646400.

The previous prime is 831000455353. The next prime is 831000455407. The reversal of 831000455381 is 183554000138.

It can be written as a sum of positive squares in 4 ways, for example, as 50323948900 + 780676506481 = 224330^2 + 883559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 831000455381 - 2²² = 830996261077 is a prime.

It is a super-2 number, since 2×831000455381² (a number of 25 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 (831000455981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2777396 + ... + 3062013.

It is an arithmetic number, because the mean of its divisors is an integer number (104977993275).

Almost surely, 2^831000455381 is an apocalyptic number.

It is an amenable number.

831000455381 is a deficient number, since it is larger than the sum of its proper divisors (8823490819).

831000455381 is a wasteful number, since it uses less digits than its factorization.

831000455381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5840919.

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 831000455381 in words is "eight hundred thirty-one billion, four hundred fifty-five thousand, three hundred eighty-one".