228334397 has 2 divisors, whose sum is σ = 228334398. Its totient is φ = 228334396.

The previous prime is 228334387. The next prime is 228334423. The reversal of 228334397 is 793433822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204461401 + 23872996 = 14299^2 + 4886^2 .

It is a cyclic number.

It is not a de Polignac number, because 228334397 - 2¹⁶ = 228268861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228334357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114167198 + 114167199.

It is an arithmetic number, because the mean of its divisors is an integer number (114167199).

Almost surely, 2^228334397 is an apocalyptic number.

It is an amenable number.

228334397 is a deficient number, since it is larger than the sum of its proper divisors (1).

228334397 is an equidigital number, since it uses as much as digits as its factorization.

228334397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 41.

The square root of 228334397 is about 15110.7378046209. The cubic root of 228334397 is about 611.2099936876.

The spelling of 228334397 in words is "two hundred twenty-eight million, three hundred thirty-four thousand, three hundred ninety-seven".