231140234 has 16 divisors (see below), whose sum is σ = 375020520. Its totient is φ = 106211520.

The previous prime is 231140227. The next prime is 231140243. The reversal of 231140234 is 432041132.

231140234 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 214534609 + 16605625 = 14647^2 + 4075^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13457 + ... + 25364.

Almost surely, 2^231140234 is an apocalyptic number.

231140234 is a deficient number, since it is larger than the sum of its proper divisors (143880286).

231140234 is a wasteful number, since it uses less digits than its factorization.

231140234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39065.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 231140234 is about 15203.2968135204. The cubic root of 231140234 is about 613.7033814348.

Adding to 231140234 its reverse (432041132), we get a palindrome (663181366).

The spelling of 231140234 in words is "two hundred thirty-one million, one hundred forty thousand, two hundred thirty-four".