231340042 has 16 divisors (see below), whose sum is σ = 359269632. Its totient is φ = 111605760.

The previous prime is 231340033. The next prime is 231340069. The reversal of 231340042 is 240043132.

231340042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 16138 + ... + 26890.

It is an arithmetic number, because the mean of its divisors is an integer number (22454352).

Almost surely, 2^231340042 is an apocalyptic number.

231340042 is a deficient number, since it is larger than the sum of its proper divisors (127929590).

231340042 is a wasteful number, since it uses less digits than its factorization.

231340042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11133.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 231340042 is about 15209.8666003355. The cubic root of 231340042 is about 613.8801680930.

Adding to 231340042 its reverse (240043132), we get a palindrome (471383174).

The spelling of 231340042 in words is "two hundred thirty-one million, three hundred forty thousand, forty-two".