233131 has 4 divisors (see below), whose sum is σ = 241200. Its totient is φ = 225064.

The previous prime is 233117. The next prime is 233141. The reversal of 233131 is 131332.

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

It is a cyclic number.

It is not a de Polignac number, because 233131 - 2¹⁵ = 200363 is a prime.

It is a super-2 number, since 2×233131² = 108700126322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3991 + ... + 4048.

It is an arithmetic number, because the mean of its divisors is an integer number (60300).

2²³³¹³¹ is an apocalyptic number.

233131 is a deficient number, since it is larger than the sum of its proper divisors (8069).

233131 is an equidigital number, since it uses as much as digits as its factorization.

233131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8068.

The product of its digits is 54, while the sum is 13.

The square root of 233131 is about 482.8364112202. The cubic root of 233131 is about 61.5460249918.

Adding to 233131 its reverse (131332), we get a palindrome (364463).

It can be divided in two parts, 2 and 33131, that added together give a palindrome (33133).

The spelling of 233131 in words is "two hundred thirty-three thousand, one hundred thirty-one".