228130723 has 2 divisors, whose sum is σ = 228130724. Its totient is φ = 228130722.

The previous prime is 228130703. The next prime is 228130751. The reversal of 228130723 is 327031822.

It is an a-pointer prime, because the next prime (228130751) can be obtained adding 228130723 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228130723 - 2⁵ = 228130691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228130691 and 228130700.

It is not a weakly prime, because it can be changed into another prime (228130703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114065361 + 114065362.

It is an arithmetic number, because the mean of its divisors is an integer number (114065362).

Almost surely, 2^228130723 is an apocalyptic number.

228130723 is a deficient number, since it is larger than the sum of its proper divisors (1).

228130723 is an equidigital number, since it uses as much as digits as its factorization.

228130723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 228130723 is about 15103.9969213450. The cubic root of 228130723 is about 611.0282067725.

The spelling of 228130723 in words is "two hundred twenty-eight million, one hundred thirty thousand, seven hundred twenty-three".