231303143422 has 16 divisors (see below), whose sum is σ = 374557110480. Its totient is φ = 106494276672.

The previous prime is 231303143377. The next prime is 231303143431. The reversal of 231303143422 is 224341303132.

It is a happy number.

It is a super-2 number, since 2×231303143422² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10865008 + ... + 10886275.

It is an arithmetic number, because the mean of its divisors is an integer number (23409819405).

Almost surely, 2^231303143422 is an apocalyptic number.

231303143422 is a deficient number, since it is larger than the sum of its proper divisors (143253967058).

231303143422 is a wasteful number, since it uses less digits than its factorization.

231303143422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21751707.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 231303143422 its reverse (224341303132), we get a palindrome (455644446554).

The spelling of 231303143422 in words is "two hundred thirty-one billion, three hundred three million, one hundred forty-three thousand, four hundred twenty-two".