228321377 has 2 divisors, whose sum is σ = 228321378. Its totient is φ = 228321376.

The previous prime is 228321371. The next prime is 228321409. The reversal of 228321377 is 773123822.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143017681 + 85303696 = 11959^2 + 9236^2 .

It is a cyclic number.

It is not a de Polignac number, because 228321377 - 2²⁴ = 211544161 is a prime.

It is a super-2 number, since 2×228321377² = 104261302390352258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228321371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114160688 + 114160689.

It is an arithmetic number, because the mean of its divisors is an integer number (114160689).

Almost surely, 2^228321377 is an apocalyptic number.

It is an amenable number.

228321377 is a deficient number, since it is larger than the sum of its proper divisors (1).

228321377 is an equidigital number, since it uses as much as digits as its factorization.

228321377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 35.

The square root of 228321377 is about 15110.3069790127. The cubic root of 228321377 is about 611.1983760696.

The spelling of 228321377 in words is "two hundred twenty-eight million, three hundred twenty-one thousand, three hundred seventy-seven".