231132112 has 40 divisors (see below), whose sum is σ = 472469760. Its totient is φ = 109232640.

The previous prime is 231132101. The next prime is 231132127. The reversal of 231132112 is 211231132.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261912 + ... + 262792.

It is an arithmetic number, because the mean of its divisors is an integer number (11811744).

Almost surely, 2^231132112 is an apocalyptic number.

It is an amenable number.

231132112 is an abundant number, since it is smaller than the sum of its proper divisors (241337648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231132112 is a wasteful number, since it uses less digits than its factorization.

231132112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1765 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 231132112 is about 15203.0296980569. The cubic root of 231132112 is about 613.6961930754.

Adding to 231132112 its reverse (211231132), we get a palindrome (442363244).

The spelling of 231132112 in words is "two hundred thirty-one million, one hundred thirty-two thousand, one hundred twelve".