831242623 has 4 divisors (see below), whose sum is σ = 836537320. Its totient is φ = 825947928.

The previous prime is 831242597. The next prime is 831242627. The reversal of 831242623 is 326242138.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-831242623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831242627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2647113 + ... + 2647426.

It is an arithmetic number, because the mean of its divisors is an integer number (209134330).

Almost surely, 2^831242623 is an apocalyptic number.

831242623 is a deficient number, since it is larger than the sum of its proper divisors (5294697).

831242623 is a wasteful number, since it uses less digits than its factorization.

831242623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5294696.

The product of its digits is 13824, while the sum is 31.

The square root of 831242623 is about 28831.2785529882. The cubic root of 831242623 is about 940.2483963289.

The spelling of 831242623 in words is "eight hundred thirty-one million, two hundred forty-two thousand, six hundred twenty-three".