231331234 has 8 divisors (see below), whose sum is σ = 347904000. Its totient is φ = 115363236.

The previous prime is 231331229. The next prime is 231331237. The reversal of 231331234 is 432133132.

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

It is not an unprimeable number, because it can be changed into a prime (231331237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150234 + ... + 151765.

It is an arithmetic number, because the mean of its divisors is an integer number (43488000).

Almost surely, 2^231331234 is an apocalyptic number.

231331234 is a deficient number, since it is larger than the sum of its proper divisors (116572766).

231331234 is a wasteful number, since it uses less digits than its factorization.

231331234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302384.

The product of its digits is 1296, while the sum is 22.

The square root of 231331234 is about 15209.5770486888. The cubic root of 231331234 is about 613.8723770723.

Adding to 231331234 its reverse (432133132), we get a palindrome (663464366).

The spelling of 231331234 in words is "two hundred thirty-one million, three hundred thirty-one thousand, two hundred thirty-four".