228321371 has 2 divisors, whose sum is σ = 228321372. Its totient is φ = 228321370.

The previous prime is 228321337. The next prime is 228321377. The reversal of 228321371 is 173123822.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228321371 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (228321377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114160685 + 114160686.

It is an arithmetic number, because the mean of its divisors is an integer number (114160686).

Almost surely, 2^228321371 is an apocalyptic number.

228321371 is a deficient number, since it is larger than the sum of its proper divisors (1).

228321371 is an equidigital number, since it uses as much as digits as its factorization.

228321371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 228321371 is about 15110.3067804727. The cubic root of 228321371 is about 611.1983707157.

The spelling of 228321371 in words is "two hundred twenty-eight million, three hundred twenty-one thousand, three hundred seventy-one".