229570813 has 2 divisors, whose sum is σ = 229570814. Its totient is φ = 229570812.

The previous prime is 229570811. The next prime is 229570823. The reversal of 229570813 is 318075922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222695929 + 6874884 = 14923^2 + 2622^2 .

It is a cyclic number.

It is not a de Polignac number, because 229570813 - 2¹ = 229570811 is a prime.

Together with 229570811, 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 (229570811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114785406 + 114785407.

It is an arithmetic number, because the mean of its divisors is an integer number (114785407).

Almost surely, 2^229570813 is an apocalyptic number.

It is an amenable number.

229570813 is a deficient number, since it is larger than the sum of its proper divisors (1).

229570813 is an equidigital number, since it uses as much as digits as its factorization.

229570813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 229570813 is about 15151.5944045503. The cubic root of 229570813 is about 612.3112292354.

The spelling of 229570813 in words is "two hundred twenty-nine million, five hundred seventy thousand, eight hundred thirteen".