228232311 has 4 divisors (see below), whose sum is σ = 304309752. Its totient is φ = 152154872.

The previous prime is 228232297. The next prime is 228232337. The reversal of 228232311 is 113232822.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228232311 - 2⁶ = 228232247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228233311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38038716 + ... + 38038721.

It is an arithmetic number, because the mean of its divisors is an integer number (76077438).

Almost surely, 2^228232311 is an apocalyptic number.

228232311 is a deficient number, since it is larger than the sum of its proper divisors (76077441).

228232311 is an equidigital number, since it uses as much as digits as its factorization.

228232311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76077440.

The product of its digits is 1152, while the sum is 24.

The square root of 228232311 is about 15107.3594979401. The cubic root of 228232311 is about 611.1188915067.

The spelling of 228232311 in words is "two hundred twenty-eight million, two hundred thirty-two thousand, three hundred eleven".