228523613 has 2 divisors, whose sum is σ = 228523614. Its totient is φ = 228523612.

The previous prime is 228523597. The next prime is 228523619. The reversal of 228523613 is 316325822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135536164 + 92987449 = 11642^2 + 9643^2 .

It is a cyclic number.

It is not a de Polignac number, because 228523613 - 2⁴ = 228523597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228523613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228523619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114261806 + 114261807.

It is an arithmetic number, because the mean of its divisors is an integer number (114261807).

Almost surely, 2^228523613 is an apocalyptic number.

It is an amenable number.

228523613 is a deficient number, since it is larger than the sum of its proper divisors (1).

228523613 is an equidigital number, since it uses as much as digits as its factorization.

228523613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 228523613 is about 15116.9974862735. The cubic root of 228523613 is about 611.3787794401.

The spelling of 228523613 in words is "two hundred twenty-eight million, five hundred twenty-three thousand, six hundred thirteen".