831868253 has 2 divisors, whose sum is σ = 831868254. Its totient is φ = 831868252.

The previous prime is 831868201. The next prime is 831868267. The reversal of 831868253 is 352868138.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 669101689 + 162766564 = 25867^2 + 12758^2 .

It is a cyclic number.

It is not a de Polignac number, because 831868253 - 2⁶ = 831868189 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (831868753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415934126 + 415934127.

It is an arithmetic number, because the mean of its divisors is an integer number (415934127).

Almost surely, 2^831868253 is an apocalyptic number.

It is an amenable number.

831868253 is a deficient number, since it is larger than the sum of its proper divisors (1).

831868253 is an equidigital number, since it uses as much as digits as its factorization.

831868253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 44.

The square root of 831868253 is about 28842.1263605858. The cubic root of 831868253 is about 940.4842280300.

The spelling of 831868253 in words is "eight hundred thirty-one million, eight hundred sixty-eight thousand, two hundred fifty-three".