228211463 has 2 divisors, whose sum is σ = 228211464. Its totient is φ = 228211462.

The previous prime is 228211457. The next prime is 228211493. The reversal of 228211463 is 364112822.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228211463 - 2¹² = 228207367 is a prime.

It is a Chen prime.

It is equal to p_12549620 and since 228211463 and 12549620 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228211493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114105731 + 114105732.

It is an arithmetic number, because the mean of its divisors is an integer number (114105732).

Almost surely, 2^228211463 is an apocalyptic number.

228211463 is a deficient number, since it is larger than the sum of its proper divisors (1).

228211463 is an equidigital number, since it uses as much as digits as its factorization.

228211463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 29.

The square root of 228211463 is about 15106.6694873490. The cubic root of 228211463 is about 611.1002832817.

The spelling of 228211463 in words is "two hundred twenty-eight million, two hundred eleven thousand, four hundred sixty-three".