228463133 has 2 divisors, whose sum is σ = 228463134. Its totient is φ = 228463132.

The previous prime is 228463121. The next prime is 228463139. The reversal of 228463133 is 331364822.

228463133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224940004 + 3523129 = 14998^2 + 1877^2 .

It is a cyclic number.

It is not a de Polignac number, because 228463133 - 2²⁰ = 227414557 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228463133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228463139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114231566 + 114231567.

It is an arithmetic number, because the mean of its divisors is an integer number (114231567).

Almost surely, 2^228463133 is an apocalyptic number.

It is an amenable number.

228463133 is a deficient number, since it is larger than the sum of its proper divisors (1).

228463133 is an equidigital number, since it uses as much as digits as its factorization.

228463133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 228463133 is about 15114.9969566653. The cubic root of 228463133 is about 611.3248397902.

The spelling of 228463133 in words is "two hundred twenty-eight million, four hundred sixty-three thousand, one hundred thirty-three".