427831 has 8 divisors (see below), whose sum is σ = 454784. Its totient is φ = 401760.

The previous prime is 427813. The next prime is 427849. The reversal of 427831 is 138724.

427831 = 89² + 90² + ... + 125².

It is an interprime number because it is at equal distance from previous prime (427813) and next prime (427849).

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

It is not a de Polignac number, because 427831 - 2¹¹ = 425783 is a prime.

It is a super-2 number, since 2×427831² = 366078729122, which contains 22 as substring.

It is a Duffinian number.

427831 is a Rhonda number in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 427796 and 427805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961 + ... + 1333.

It is an arithmetic number, because the mean of its divisors is an integer number (56848).

2⁴²⁷⁸³¹ is an apocalyptic number.

427831 is a deficient number, since it is larger than the sum of its proper divisors (26953).

427831 is a wasteful number, since it uses less digits than its factorization.

427831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441.

The product of its digits is 1344, while the sum is 25.

The square root of 427831 is about 654.0879145803. The cubic root of 427831 is about 75.3513000890.

The spelling of 427831 in words is "four hundred twenty-seven thousand, eight hundred thirty-one".