228833291 has 2 divisors, whose sum is σ = 228833292. Its totient is φ = 228833290.

The previous prime is 228833281. The next prime is 228833317. The reversal of 228833291 is 192338822.

228833291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228833291 is a prime.

It is not a weakly prime, because it can be changed into another prime (228833201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114416645 + 114416646.

It is an arithmetic number, because the mean of its divisors is an integer number (114416646).

Almost surely, 2^228833291 is an apocalyptic number.

228833291 is a deficient number, since it is larger than the sum of its proper divisors (1).

228833291 is an equidigital number, since it uses as much as digits as its factorization.

228833291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 228833291 is about 15127.2367271753. The cubic root of 228833291 is about 611.6548196230.

The spelling of 228833291 in words is "two hundred twenty-eight million, eight hundred thirty-three thousand, two hundred ninety-one".