831120403 has 4 divisors (see below), whose sum is σ = 842505688. Its totient is φ = 819735120.

The previous prime is 831120397. The next prime is 831120413. The reversal of 831120403 is 304021138.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 831120403 - 2¹³ = 831112211 is a prime.

It is a super-2 number, since 2×831120403² = 1381522248565764818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (831120413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5692533 + ... + 5692678.

It is an arithmetic number, because the mean of its divisors is an integer number (210626422).

Almost surely, 2^831120403 is an apocalyptic number.

831120403 is a deficient number, since it is larger than the sum of its proper divisors (11385285).

831120403 is a wasteful number, since it uses less digits than its factorization.

831120403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11385284.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 831120403 is about 28829.1589020561. The cubic root of 831120403 is about 940.2023115924.

The spelling of 831120403 in words is "eight hundred thirty-one million, one hundred twenty thousand, four hundred three".