228731611 has 4 divisors (see below), whose sum is σ = 229320000. Its totient is φ = 228143224.

The previous prime is 228731599. The next prime is 228731627. The reversal of 228731611 is 116137822.

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 228731611 - 2¹³ = 228723419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228731641) 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, 293611 + ... + 294388.

It is an arithmetic number, because the mean of its divisors is an integer number (57330000).

Almost surely, 2^228731611 is an apocalyptic number.

228731611 is a deficient number, since it is larger than the sum of its proper divisors (588389).

228731611 is an equidigital number, since it uses as much as digits as its factorization.

228731611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588388.

The product of its digits is 4032, while the sum is 31.

The square root of 228731611 is about 15123.8755284484. The cubic root of 228731611 is about 611.5642117753.

The spelling of 228731611 in words is "two hundred twenty-eight million, seven hundred thirty-one thousand, six hundred eleven".