231423203242 has 64 divisors (see below), whose sum is σ = 435422490624. Its totient is φ = 89618336640.

The previous prime is 231423203233. The next prime is 231423203257. The reversal of 231423203242 is 242302324132.

It is a self number, because there is not a number n which added to its sum of digits gives 231423203242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18503163 + ... + 18515665.

It is an arithmetic number, because the mean of its divisors is an integer number (6803476416).

Almost surely, 2^231423203242 is an apocalyptic number.

231423203242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231423203242 is a deficient number, since it is larger than the sum of its proper divisors (203999287382).

231423203242 is a wasteful number, since it uses less digits than its factorization.

231423203242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13243.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 231423203242 its reverse (242302324132), we get a palindrome (473725527374).

The spelling of 231423203242 in words is "two hundred thirty-one billion, four hundred twenty-three million, two hundred three thousand, two hundred forty-two".