228342539 has 2 divisors, whose sum is σ = 228342540. Its totient is φ = 228342538.

The previous prime is 228342523. The next prime is 228342547. The reversal of 228342539 is 935243822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228342539 - 2⁴ = 228342523 is a prime.

It is not a weakly prime, because it can be changed into another prime (228342509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114171269 + 114171270.

It is an arithmetic number, because the mean of its divisors is an integer number (114171270).

Almost surely, 2^228342539 is an apocalyptic number.

228342539 is a deficient number, since it is larger than the sum of its proper divisors (1).

228342539 is an equidigital number, since it uses as much as digits as its factorization.

228342539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 38.

The square root of 228342539 is about 15111.0072132866. The cubic root of 228342539 is about 611.2172584897.

The spelling of 228342539 in words is "two hundred twenty-eight million, three hundred forty-two thousand, five hundred thirty-nine".