342631 has 4 divisors (see below), whose sum is σ = 357552. Its totient is φ = 327712.

The previous prime is 342607. The next prime is 342647. The reversal of 342631 is 136243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136243 = 41 ⋅3323.

It is a cyclic number.

It is not a de Polignac number, because 342631 - 2⁵ = 342599 is a prime.

It is a super-2 number, since 2×342631² = 234792004322, which contains 22 as substring.

It is a Duffinian number.

342631 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 342599 and 342608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342691) 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 3 ways as a sum of consecutive naturals, for example, 7426 + ... + 7471.

It is an arithmetic number, because the mean of its divisors is an integer number (89388).

2³⁴²⁶³¹ is an apocalyptic number.

342631 is a deficient number, since it is larger than the sum of its proper divisors (14921).

342631 is a wasteful number, since it uses less digits than its factorization.

342631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14920.

The product of its digits is 432, while the sum is 19.

The square root of 342631 is about 585.3469056893. The cubic root of 342631 is about 69.9748889522.

Adding to 342631 its reverse (136243), we get a palindrome (478874).

The spelling of 342631 in words is "three hundred forty-two thousand, six hundred thirty-one".