231240342 has 8 divisors (see below), whose sum is σ = 462480696. Its totient is φ = 77080112.

The previous prime is 231240323. The next prime is 231240371. The reversal of 231240342 is 243042132.

231240342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

231240342 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19270023 + ... + 19270034.

It is an arithmetic number, because the mean of its divisors is an integer number (57810087).

Almost surely, 2^231240342 is an apocalyptic number.

231240342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231240342 is a wasteful number, since it uses less digits than its factorization.

231240342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38540062.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 231240342 is about 15206.5887693460. The cubic root of 231240342 is about 613.7919679892.

Adding to 231240342 its reverse (243042132), we get a palindrome (474282474).

The spelling of 231240342 in words is "two hundred thirty-one million, two hundred forty thousand, three hundred forty-two".