831848421 has 4 divisors (see below), whose sum is σ = 1109131232. Its totient is φ = 554565612.

The previous prime is 831848401. The next prime is 831848449. The reversal of 831848421 is 124848138.

It is a happy number.

831848421 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 831848421 - 2⁷ = 831848293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 831848421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831848401) 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, 138641401 + ... + 138641406.

It is an arithmetic number, because the mean of its divisors is an integer number (277282808).

Almost surely, 2^831848421 is an apocalyptic number.

It is an amenable number.

831848421 is a deficient number, since it is larger than the sum of its proper divisors (277282811).

831848421 is a wasteful number, since it uses less digits than its factorization.

831848421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277282810.

The product of its digits is 49152, while the sum is 39.

The square root of 831848421 is about 28841.7825558685. The cubic root of 831848421 is about 940.4767541576.

The spelling of 831848421 in words is "eight hundred thirty-one million, eight hundred forty-eight thousand, four hundred twenty-one".