231222225134 has 16 divisors (see below), whose sum is σ = 349945036800. Its totient is φ = 114575862744.

The previous prime is 231222225131. The next prime is 231222225139. The reversal of 231222225134 is 431522222132.

It is a junction number, because it is equal to n+sod(n) for n = 231222225097 and 231222225106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231222225131) by changing a digit.

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, 261854 + ... + 728705.

It is an arithmetic number, because the mean of its divisors is an integer number (21871564800).

Almost surely, 2^231222225134 is an apocalyptic number.

231222225134 is a deficient number, since it is larger than the sum of its proper divisors (118722811666).

231222225134 is a wasteful number, since it uses less digits than its factorization.

231222225134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991607.

The product of its digits is 11520, while the sum is 29.

Adding to 231222225134 its reverse (431522222132), we get a palindrome (662744447266).

The spelling of 231222225134 in words is "two hundred thirty-one billion, two hundred twenty-two million, two hundred twenty-five thousand, one hundred thirty-four".