231670022145 has 16 divisors (see below), whose sum is σ = 379712817792. Its totient is φ = 120543751040.

The previous prime is 231670022141. The next prime is 231670022147. The reversal of 231670022145 is 541220076132.

It is not a de Polignac number, because 231670022145 - 2² = 231670022141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231670022141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188348997 + ... + 188350226.

It is an arithmetic number, because the mean of its divisors is an integer number (23732051112).

Almost surely, 2^231670022145 is an apocalyptic number.

It is an amenable number.

231670022145 is a deficient number, since it is larger than the sum of its proper divisors (148042795647).

231670022145 is a wasteful number, since it uses less digits than its factorization.

231670022145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376699272.

The product of its (nonzero) digits is 20160, while the sum is 33.

Adding to 231670022145 its reverse (541220076132), we get a palindrome (772890098277).

The spelling of 231670022145 in words is "two hundred thirty-one billion, six hundred seventy million, twenty-two thousand, one hundred forty-five".