228135361 has 4 divisors (see below), whose sum is σ = 230154372. Its totient is φ = 226116352.

The previous prime is 228135343. The next prime is 228135409. The reversal of 228135361 is 163531822.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31013761 + 197121600 = 5569^2 + 14040^2 .

It is a cyclic number.

It is not a de Polignac number, because 228135361 - 2⁷ = 228135233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228135301) 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, 1009336 + ... + 1009561.

It is an arithmetic number, because the mean of its divisors is an integer number (57538593).

Almost surely, 2^228135361 is an apocalyptic number.

It is an amenable number.

228135361 is a deficient number, since it is larger than the sum of its proper divisors (2019011).

228135361 is a wasteful number, since it uses less digits than its factorization.

228135361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019010.

The product of its digits is 8640, while the sum is 31.

The square root of 228135361 is about 15104.1504560833. The cubic root of 228135361 is about 611.0323475704.

The spelling of 228135361 in words is "two hundred twenty-eight million, one hundred thirty-five thousand, three hundred sixty-one".