231022311112 has 8 divisors (see below), whose sum is σ = 433166833350. Its totient is φ = 115511155552.

The previous prime is 231022311109. The next prime is 231022311119. The reversal of 231022311112 is 211113220132.

It can be written as a sum of positive squares in only one way, i.e., 121094256196 + 109928054916 = 347986^2 + 331554^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 231022311112.

It is not an unprimeable number, because it can be changed into a prime (231022311119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14438894437 + ... + 14438894452.

Almost surely, 2^231022311112 is an apocalyptic number.

It is an amenable number.

231022311112 is a deficient number, since it is larger than the sum of its proper divisors (202144522238).

231022311112 is a wasteful number, since it uses less digits than its factorization.

231022311112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28877788895 (or 28877788891 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 231022311112 its reverse (211113220132), we get a palindrome (442135531244).

The spelling of 231022311112 in words is "two hundred thirty-one billion, twenty-two million, three hundred eleven thousand, one hundred twelve".