232131311 has 16 divisors (see below), whose sum is σ = 251424000. Its totient is φ = 213510528.

The previous prime is 232131247. The next prime is 232131323. The reversal of 232131311 is 113131232.

It is a cyclic number.

It is not a de Polignac number, because 232131311 - 2⁶ = 232131247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 232131311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232131371) 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 15 ways as a sum of consecutive naturals, for example, 199016 + ... + 200178.

It is an arithmetic number, because the mean of its divisors is an integer number (15714000).

Almost surely, 2^232131311 is an apocalyptic number.

232131311 is a deficient number, since it is larger than the sum of its proper divisors (19292689).

232131311 is a wasteful number, since it uses less digits than its factorization.

232131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438.

The product of its digits is 108, while the sum is 17.

The square root of 232131311 is about 15235.8560967213. The cubic root of 232131311 is about 614.5792711445.

Adding to 232131311 its reverse (113131232), we get a palindrome (345262543).

The spelling of 232131311 in words is "two hundred thirty-two million, one hundred thirty-one thousand, three hundred eleven".