842831 has 8 divisors (see below), whose sum is σ = 926544. Its totient is φ = 760320.

The previous prime is 842819. The next prime is 842857. The reversal of 842831 is 138248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 842831 - 2⁶ = 842767 is a prime.

It is a super-2 number, since 2×842831² = 1420728189122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 842831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1925 + ... + 2321.

It is an arithmetic number, because the mean of its divisors is an integer number (115818).

2⁸⁴²⁸³¹ is an apocalyptic number.

842831 is a deficient number, since it is larger than the sum of its proper divisors (83713).

842831 is a wasteful number, since it uses less digits than its factorization.

842831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601.

The product of its digits is 1536, while the sum is 26.

The square root of 842831 is about 918.0582770173. The cubic root of 842831 is about 94.4597590954.

The spelling of 842831 in words is "eight hundred forty-two thousand, eight hundred thirty-one".