228317473 has 2 divisors, whose sum is σ = 228317474. Its totient is φ = 228317472.

The previous prime is 228317461. The next prime is 228317477. The reversal of 228317473 is 374713822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141324544 + 86992929 = 11888^2 + 9327^2 .

It is a cyclic number.

It is not a de Polignac number, because 228317473 - 2²¹ = 226220321 is a prime.

It is not a weakly prime, because it can be changed into another prime (228317477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114158736 + 114158737.

It is an arithmetic number, because the mean of its divisors is an integer number (114158737).

Almost surely, 2^228317473 is an apocalyptic number.

It is an amenable number.

228317473 is a deficient number, since it is larger than the sum of its proper divisors (1).

228317473 is an equidigital number, since it uses as much as digits as its factorization.

228317473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 37.

The square root of 228317473 is about 15110.1777951154. The cubic root of 228317473 is about 611.1948924827.

The spelling of 228317473 in words is "two hundred twenty-eight million, three hundred seventeen thousand, four hundred seventy-three".