231403221242 has 16 divisors (see below), whose sum is σ = 353765325312. Its totient is φ = 113482820880.

The previous prime is 231403221173. The next prime is 231403221263. The reversal of 231403221242 is 242122304132.

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, 3818 + ... + 680309.

It is an arithmetic number, because the mean of its divisors is an integer number (22110332832).

Almost surely, 2^231403221242 is an apocalyptic number.

231403221242 is a deficient number, since it is larger than the sum of its proper divisors (122362104070).

231403221242 is a wasteful number, since it uses less digits than its factorization.

231403221242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687373.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 231403221242 its reverse (242122304132), we get a palindrome (473525525374).

The spelling of 231403221242 in words is "two hundred thirty-one billion, four hundred three million, two hundred twenty-one thousand, two hundred forty-two".