235820231 has 2 divisors, whose sum is σ = 235820232. Its totient is φ = 235820230.

The previous prime is 235820183. The next prime is 235820237. The reversal of 235820231 is 132028532.

235820231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 235820231 - 2¹⁴ = 235803847 is a prime.

It is a super-2 number, since 2×235820231² = 111222362697786722, 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 235820231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235820237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117910115 + 117910116.

It is an arithmetic number, because the mean of its divisors is an integer number (117910116).

Almost surely, 2^235820231 is an apocalyptic number.

235820231 is a deficient number, since it is larger than the sum of its proper divisors (1).

235820231 is an equidigital number, since it uses as much as digits as its factorization.

235820231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 235820231 is about 15356.4393985064. The cubic root of 235820231 is about 617.8177101539.

Adding to 235820231 its reverse (132028532), we get a palindrome (367848763).

The spelling of 235820231 in words is "two hundred thirty-five million, eight hundred twenty thousand, two hundred thirty-one".