227812513 has 2 divisors, whose sum is σ = 227812514. Its totient is φ = 227812512.

The previous prime is 227812471. The next prime is 227812561. The reversal of 227812513 is 315218722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135210384 + 92602129 = 11628^2 + 9623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227812513 is a prime.

It is not a weakly prime, because it can be changed into another prime (227812213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113906256 + 113906257.

It is an arithmetic number, because the mean of its divisors is an integer number (113906257).

Almost surely, 2^227812513 is an apocalyptic number.

It is an amenable number.

227812513 is a deficient number, since it is larger than the sum of its proper divisors (1).

227812513 is an equidigital number, since it uses as much as digits as its factorization.

227812513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 227812513 is about 15093.4592787737. The cubic root of 227812513 is about 610.7439753511.

The spelling of 227812513 in words is "two hundred twenty-seven million, eight hundred twelve thousand, five hundred thirteen".