235608281 has 2 divisors, whose sum is σ = 235608282. Its totient is φ = 235608280.

The previous prime is 235608229. The next prime is 235608293. The reversal of 235608281 is 182806532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235315600 + 292681 = 15340^2 + 541^2 .

It is a cyclic number.

It is not a de Polignac number, because 235608281 - 2²⁶ = 168499417 is a prime.

It is a super-2 number, since 2×235608281² = 111022524151549922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (235608211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117804140 + 117804141.

It is an arithmetic number, because the mean of its divisors is an integer number (117804141).

Almost surely, 2^235608281 is an apocalyptic number.

It is an amenable number.

235608281 is a deficient number, since it is larger than the sum of its proper divisors (1).

235608281 is an equidigital number, since it uses as much as digits as its factorization.

235608281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 235608281 is about 15349.5368334031. The cubic root of 235608281 is about 617.6325610492.

The spelling of 235608281 in words is "two hundred thirty-five million, six hundred eight thousand, two hundred eighty-one".