342743831 has 4 divisors (see below), whose sum is σ = 360783000. Its totient is φ = 324704664.

The previous prime is 342743827. The next prime is 342743857. The reversal of 342743831 is 138347243.

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

It is a cyclic number.

It is not a de Polignac number, because 342743831 - 2² = 342743827 is a prime.

It is a super-2 number, since 2×342743831² = 234946667377113122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 342743791 and 342743800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342743131) 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, 9019556 + ... + 9019593.

It is an arithmetic number, because the mean of its divisors is an integer number (90195750).

Almost surely, 2^342743831 is an apocalyptic number.

342743831 is a deficient number, since it is larger than the sum of its proper divisors (18039169).

342743831 is a wasteful number, since it uses less digits than its factorization.

342743831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18039168.

The product of its digits is 48384, while the sum is 35.

The square root of 342743831 is about 18513.3419727504. The cubic root of 342743831 is about 699.8256919731.

The spelling of 342743831 in words is "three hundred forty-two million, seven hundred forty-three thousand, eight hundred thirty-one".