231340342 has 8 divisors (see below), whose sum is σ = 347836032. Its totient is φ = 115395000.

The previous prime is 231340309. The next prime is 231340393. The reversal of 231340342 is 243043132.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 136534 + ... + 138217.

It is an arithmetic number, because the mean of its divisors is an integer number (43479504).

Almost surely, 2^231340342 is an apocalyptic number.

231340342 is a deficient number, since it is larger than the sum of its proper divisors (116495690).

231340342 is a wasteful number, since it uses less digits than its factorization.

231340342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275174.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 231340342 is about 15209.8764623517. The cubic root of 231340342 is about 613.8804334513.

Adding to 231340342 its reverse (243043132), we get a palindrome (474383474).

The spelling of 231340342 in words is "two hundred thirty-one million, three hundred forty thousand, three hundred forty-two".