235131 has 8 divisors (see below), whose sum is σ = 337680. Its totient is φ = 144672.

The previous prime is 235117. The next prime is 235159. The reversal of 235131 is 131532.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 235131 - 2⁵ = 235099 is a prime.

It is a super-2 number, since 2×235131² = 110573174322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 235131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2976 + ... + 3053.

It is an arithmetic number, because the mean of its divisors is an integer number (42210).

2²³⁵¹³¹ is an apocalyptic number.

235131 is a deficient number, since it is larger than the sum of its proper divisors (102549).

235131 is a wasteful number, since it uses less digits than its factorization.

235131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6045.

The product of its digits is 90, while the sum is 15.

The square root of 235131 is about 484.9030831001. The cubic root of 235131 is about 61.7215224894.

Adding to 235131 its reverse (131532), we get a palindrome (366663).

The spelling of 235131 in words is "two hundred thirty-five thousand, one hundred thirty-one".