228373181 has 2 divisors, whose sum is σ = 228373182. Its totient is φ = 228373180.

The previous prime is 228373169. The next prime is 228373193. The reversal of 228373181 is 181373822.

It is a balanced prime because it is at equal distance from previous prime (228373169) and next prime (228373193).

It can be written as a sum of positive squares in only one way, i.e., 221265625 + 7107556 = 14875^2 + 2666^2 .

It is a cyclic number.

It is not a de Polignac number, because 228373181 - 2¹⁴ = 228356797 is a prime.

It is a super-2 number, since 2×228373181² = 104308619600117522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228373151) 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, 114186590 + 114186591.

It is an arithmetic number, because the mean of its divisors is an integer number (114186591).

Almost surely, 2^228373181 is an apocalyptic number.

It is an amenable number.

228373181 is a deficient number, since it is larger than the sum of its proper divisors (1).

228373181 is an equidigital number, since it uses as much as digits as its factorization.

228373181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 228373181 is about 15112.0210759514. The cubic root of 228373181 is about 611.2445976524.

The spelling of 228373181 in words is "two hundred twenty-eight million, three hundred seventy-three thousand, one hundred eighty-one".