831131263 has 2 divisors, whose sum is σ = 831131264. Its totient is φ = 831131262.

The previous prime is 831131251. The next prime is 831131299. The reversal of 831131263 is 362131138.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 831131263 - 2¹³ = 831123071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (831131863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415565631 + 415565632.

It is an arithmetic number, because the mean of its divisors is an integer number (415565632).

Almost surely, 2^831131263 is an apocalyptic number.

831131263 is a deficient number, since it is larger than the sum of its proper divisors (1).

831131263 is an equidigital number, since it uses as much as digits as its factorization.

831131263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 831131263 is about 28829.3472524093. The cubic root of 831131263 is about 940.2064066881.

The spelling of 831131263 in words is "eight hundred thirty-one million, one hundred thirty-one thousand, two hundred sixty-three".