342831 has 4 divisors (see below), whose sum is σ = 457112. Its totient is φ = 228552.

The previous prime is 342821. The next prime is 342833. The reversal of 342831 is 138243.

It is a happy number.

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

It is not a de Polignac number, because 342831 - 2⁵ = 342799 is a prime.

It is a super-2 number, since 2×342831² = 235066189122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 342798 and 342807.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342831.

It is not an unprimeable number, because it can be changed into a prime (342833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57136 + ... + 57141.

It is an arithmetic number, because the mean of its divisors is an integer number (114278).

2³⁴²⁸³¹ is an apocalyptic number.

342831 is a deficient number, since it is larger than the sum of its proper divisors (114281).

342831 is a wasteful number, since it uses less digits than its factorization.

342831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114280.

The product of its digits is 576, while the sum is 21.

The square root of 342831 is about 585.5177196294. The cubic root of 342831 is about 69.9885015127.

The spelling of 342831 in words is "three hundred forty-two thousand, eight hundred thirty-one".