231201112 has 8 divisors (see below), whose sum is σ = 433502100. Its totient is φ = 115600552.

The previous prime is 231201109. The next prime is 231201119. The reversal of 231201112 is 211102132.

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

It is a junction number, because it is equal to n+sod(n) for n = 231201092 and 231201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231201119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14450062 + ... + 14450077.

Almost surely, 2^231201112 is an apocalyptic number.

It is an amenable number.

231201112 is a deficient number, since it is larger than the sum of its proper divisors (202300988).

231201112 is a wasteful number, since it uses less digits than its factorization.

231201112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28900145 (or 28900141 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 231201112 is about 15205.2988132427. The cubic root of 231201112 is about 613.7572560232.

Adding to 231201112 its reverse (211102132), we get a palindrome (442303244).

The spelling of 231201112 in words is "two hundred thirty-one million, two hundred one thousand, one hundred twelve".