232135231 has 4 divisors (see below), whose sum is σ = 232471864. Its totient is φ = 231798600.

The previous prime is 232135219. The next prime is 232135243. The reversal of 232135231 is 132531232.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (232135219) and next prime (232135243).

It is a cyclic number.

It is not a de Polignac number, because 232135231 - 2⁹ = 232134719 is a prime.

It is a super-2 number, since 2×232135231² = 107773530942846722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232135531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167280 + ... + 168661.

It is an arithmetic number, because the mean of its divisors is an integer number (58117966).

Almost surely, 2^232135231 is an apocalyptic number.

232135231 is a deficient number, since it is larger than the sum of its proper divisors (336633).

232135231 is an equidigital number, since it uses as much as digits as its factorization.

232135231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336632.

The product of its digits is 1080, while the sum is 22.

The square root of 232135231 is about 15235.9847400816. The cubic root of 232135231 is about 614.5827305905.

Adding to 232135231 its reverse (132531232), we get a palindrome (364666463).

The spelling of 232135231 in words is "two hundred thirty-two million, one hundred thirty-five thousand, two hundred thirty-one".