228323609 has 2 divisors, whose sum is σ = 228323610. Its totient is φ = 228323608.

The previous prime is 228323597. The next prime is 228323611. The reversal of 228323609 is 906323822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157427209 + 70896400 = 12547^2 + 8420^2 .

It is a cyclic number.

It is not a de Polignac number, because 228323609 - 2¹⁶ = 228258073 is a prime.

Together with 228323611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228323639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114161804 + 114161805.

It is an arithmetic number, because the mean of its divisors is an integer number (114161805).

Almost surely, 2^228323609 is an apocalyptic number.

It is an amenable number.

228323609 is a deficient number, since it is larger than the sum of its proper divisors (1).

228323609 is an equidigital number, since it uses as much as digits as its factorization.

228323609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 228323609 is about 15110.3808357036. The cubic root of 228323609 is about 611.2003676926.

The spelling of 228323609 in words is "two hundred twenty-eight million, three hundred twenty-three thousand, six hundred nine".