228333251 has 2 divisors, whose sum is σ = 228333252. Its totient is φ = 228333250.

The previous prime is 228333233. The next prime is 228333257. The reversal of 228333251 is 152333822.

It is a happy number.

228333251 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 228333251 - 2¹⁰ = 228332227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (228333257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114166625 + 114166626.

It is an arithmetic number, because the mean of its divisors is an integer number (114166626).

Almost surely, 2^228333251 is an apocalyptic number.

228333251 is a deficient number, since it is larger than the sum of its proper divisors (1).

228333251 is an equidigital number, since it uses as much as digits as its factorization.

228333251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 228333251 is about 15110.6998845189. The cubic root of 228333251 is about 611.2089711408.

The spelling of 228333251 in words is "two hundred twenty-eight million, three hundred thirty-three thousand, two hundred fifty-one".