228203153 has 2 divisors, whose sum is σ = 228203154. Its totient is φ = 228203152.

The previous prime is 228203147. The next prime is 228203177. The reversal of 228203153 is 351302822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225840784 + 2362369 = 15028^2 + 1537^2 .

It is a cyclic number.

It is not a de Polignac number, because 228203153 - 2²² = 224008849 is a prime.

It is not a weakly prime, because it can be changed into another prime (228203453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114101576 + 114101577.

It is an arithmetic number, because the mean of its divisors is an integer number (114101577).

Almost surely, 2^228203153 is an apocalyptic number.

It is an amenable number.

228203153 is a deficient number, since it is larger than the sum of its proper divisors (1).

228203153 is an equidigital number, since it uses as much as digits as its factorization.

228203153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 228203153 is about 15106.3944407658. The cubic root of 228203153 is about 611.0928657387.

Adding to 228203153 its reverse (351302822), we get a palindrome (579505975).

The spelling of 228203153 in words is "two hundred twenty-eight million, two hundred three thousand, one hundred fifty-three".