831530863 has 2 divisors, whose sum is σ = 831530864. Its totient is φ = 831530862.

The previous prime is 831530857. The next prime is 831530897. The reversal of 831530863 is 368035138.

831530863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-831530863 is a prime.

It is a super-2 number, since 2×831530863² = 1382887152243049538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (831500863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415765431 + 415765432.

It is an arithmetic number, because the mean of its divisors is an integer number (415765432).

Almost surely, 2^831530863 is an apocalyptic number.

831530863 is a deficient number, since it is larger than the sum of its proper divisors (1).

831530863 is an equidigital number, since it uses as much as digits as its factorization.

831530863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 831530863 is about 28836.2768574586. The cubic root of 831530863 is about 940.3570633095.

The spelling of 831530863 in words is "eight hundred thirty-one million, five hundred thirty thousand, eight hundred sixty-three".