231192 has 72 divisors (see below), whose sum is σ = 713700. Its totient is φ = 67392.

The previous prime is 231169. The next prime is 231197. The reversal of 231192 is 291132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231197) by changing a digit.

231192 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12159 + ... + 12177.

2²³¹¹⁹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356850).

231192 is an abundant number, since it is smaller than the sum of its proper divisors (482508).

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

231192 is a wasteful number, since it uses less digits than its factorization.

231192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 37 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 231192 is about 480.8242922316. The cubic root of 231192 is about 61.3749192870.

The spelling of 231192 in words is "two hundred thirty-one thousand, one hundred ninety-two".