228797311 has 2 divisors, whose sum is σ = 228797312. Its totient is φ = 228797310.

The previous prime is 228797251. The next prime is 228797321. The reversal of 228797311 is 113797822.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228797311 - 2¹¹ = 228795263 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 (228797321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114398655 + 114398656.

It is an arithmetic number, because the mean of its divisors is an integer number (114398656).

Almost surely, 2^228797311 is an apocalyptic number.

228797311 is a deficient number, since it is larger than the sum of its proper divisors (1).

228797311 is an equidigital number, since it uses as much as digits as its factorization.

228797311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 228797311 is about 15126.0474348060. The cubic root of 228797311 is about 611.6227606310.

The spelling of 228797311 in words is "two hundred twenty-eight million, seven hundred ninety-seven thousand, three hundred eleven".