231344142 has 8 divisors (see below), whose sum is σ = 462688296. Its totient is φ = 77114712.

The previous prime is 231344137. The next prime is 231344149. The reversal of 231344142 is 241443132.

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

231344142 is an admirable number.

It is a super-3 number, since 3×231344142³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231344149) 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, 19278673 + ... + 19278684.

It is an arithmetic number, because the mean of its divisors is an integer number (57836037).

Almost surely, 2^231344142 is an apocalyptic number.

231344142 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.

231344142 is a wasteful number, since it uses less digits than its factorization.

231344142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38557362.

The product of its digits is 2304, while the sum is 24.

The square root of 231344142 is about 15210.0013806705. The cubic root of 231344142 is about 613.8837946360.

Adding to 231344142 its reverse (241443132), we get a palindrome (472787274).

The spelling of 231344142 in words is "two hundred thirty-one million, three hundred forty-four thousand, one hundred forty-two".