228130139 has 2 divisors, whose sum is σ = 228130140. Its totient is φ = 228130138.

The previous prime is 228130127. The next prime is 228130141. The reversal of 228130139 is 931031822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228130139 - 2⁸ = 228129883 is a prime.

Together with 228130141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228130159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114065069 + 114065070.

It is an arithmetic number, because the mean of its divisors is an integer number (114065070).

Almost surely, 2^228130139 is an apocalyptic number.

228130139 is a deficient number, since it is larger than the sum of its proper divisors (1).

228130139 is an equidigital number, since it uses as much as digits as its factorization.

228130139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 228130139 is about 15103.9775887016. The cubic root of 228130139 is about 611.0276853744.

The spelling of 228130139 in words is "two hundred twenty-eight million, one hundred thirty thousand, one hundred thirty-nine".