228651307 has 4 divisors (see below), whose sum is σ = 228697056. Its totient is φ = 228605560.

The previous prime is 228651299. The next prime is 228651317. The reversal of 228651307 is 703156822.

It is a happy number.

228651307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 228651307 - 2³ = 228651299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228651317) 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, 14308 + ... + 25729.

It is an arithmetic number, because the mean of its divisors is an integer number (57174264).

Almost surely, 2^228651307 is an apocalyptic number.

228651307 is a deficient number, since it is larger than the sum of its proper divisors (45749).

228651307 is an equidigital number, since it uses as much as digits as its factorization.

228651307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45748.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 228651307 is about 15121.2204203232. The cubic root of 228651307 is about 611.4926332693.

The spelling of 228651307 in words is "two hundred twenty-eight million, six hundred fifty-one thousand, three hundred seven".