231421431422 has 16 divisors (see below), whose sum is σ = 373899989760. Its totient is φ = 107071359192.

The previous prime is 231421431391. The next prime is 231421431431. The reversal of 231421431422 is 224134124132.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 70812758 + ... + 70816025.

It is an arithmetic number, because the mean of its divisors is an integer number (23368749360).

Almost surely, 2^231421431422 is an apocalyptic number.

231421431422 is a deficient number, since it is larger than the sum of its proper divisors (142478558338).

231421431422 is a wasteful number, since it uses less digits than its factorization.

231421431422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141628847.

The product of its digits is 9216, while the sum is 29.

Adding to 231421431422 its reverse (224134124132), we get a palindrome (455555555554).

The spelling of 231421431422 in words is "two hundred thirty-one billion, four hundred twenty-one million, four hundred thirty-one thousand, four hundred twenty-two".