231140334 has 16 divisors (see below), whose sum is σ = 462616272. Its totient is φ = 76990848.

The previous prime is 231140321. The next prime is 231140341. The reversal of 231140334 is 433041132.

231140334 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231140334.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4539 + ... + 21974.

It is an arithmetic number, because the mean of its divisors is an integer number (28913517).

Almost surely, 2^231140334 is an apocalyptic number.

231140334 is an abundant number, since it is smaller than the sum of its proper divisors (231475938).

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

231140334 is a wasteful number, since it uses less digits than its factorization.

231140334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27971.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 231140334 is about 15203.3001022804. The cubic root of 231140334 is about 613.7034699386.

Adding to 231140334 its reverse (433041132), we get a palindrome (664181466).

The spelling of 231140334 in words is "two hundred thirty-one million, one hundred forty thousand, three hundred thirty-four".