228317461 has 2 divisors, whose sum is σ = 228317462. Its totient is φ = 228317460.

The previous prime is 228317459. The next prime is 228317473. The reversal of 228317461 is 164713822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177822225 + 50495236 = 13335^2 + 7106^2 .

It is a cyclic number.

It is not a de Polignac number, because 228317461 - 2¹ = 228317459 is a prime.

Together with 228317459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228317431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114158730 + 114158731.

It is an arithmetic number, because the mean of its divisors is an integer number (114158731).

Almost surely, 2^228317461 is an apocalyptic number.

It is an amenable number.

228317461 is a deficient number, since it is larger than the sum of its proper divisors (1).

228317461 is an equidigital number, since it uses as much as digits as its factorization.

228317461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 228317461 is about 15110.1773980321. The cubic root of 228317461 is about 611.1948817749.

The spelling of 228317461 in words is "two hundred twenty-eight million, three hundred seventeen thousand, four hundred sixty-one".