228134813 has 2 divisors, whose sum is σ = 228134814. Its totient is φ = 228134812.

The previous prime is 228134791. The next prime is 228134833. The reversal of 228134813 is 318431822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225660484 + 2474329 = 15022^2 + 1573^2 .

It is a cyclic number.

It is not a de Polignac number, because 228134813 - 2⁶ = 228134749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228134813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228134833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114067406 + 114067407.

It is an arithmetic number, because the mean of its divisors is an integer number (114067407).

Almost surely, 2^228134813 is an apocalyptic number.

It is an amenable number.

228134813 is a deficient number, since it is larger than the sum of its proper divisors (1).

228134813 is an equidigital number, since it uses as much as digits as its factorization.

228134813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 32.

The square root of 228134813 is about 15104.1323153632. The cubic root of 228134813 is about 611.0318583199.

The spelling of 228134813 in words is "two hundred twenty-eight million, one hundred thirty-four thousand, eight hundred thirteen".