228148317 has 6 divisors (see below), whose sum is σ = 329547582. Its totient is φ = 152098872.

The previous prime is 228148309. The next prime is 228148331. The reversal of 228148317 is 713841822.

228148317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 178783641 + 49364676 = 13371^2 + 7026^2 .

It is not a de Polignac number, because 228148317 - 2³ = 228148309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228148337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12674898 + ... + 12674915.

It is an arithmetic number, because the mean of its divisors is an integer number (54924597).

Almost surely, 2^228148317 is an apocalyptic number.

It is an amenable number.

228148317 is a deficient number, since it is larger than the sum of its proper divisors (101399265).

228148317 is a wasteful number, since it uses less digits than its factorization.

228148317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25349819 (or 25349816 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 228148317 is about 15104.5793387304. The cubic root of 228148317 is about 611.0439143659.

The spelling of 228148317 in words is "two hundred twenty-eight million, one hundred forty-eight thousand, three hundred seventeen".