229520237 has 2 divisors, whose sum is σ = 229520238. Its totient is φ = 229520236.

The previous prime is 229520233. The next prime is 229520267. The reversal of 229520237 is 732025922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162460516 + 67059721 = 12746^2 + 8189^2 .

It is a cyclic number.

It is not a de Polignac number, because 229520237 - 2² = 229520233 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229520233) 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, 114760118 + 114760119.

It is an arithmetic number, because the mean of its divisors is an integer number (114760119).

Almost surely, 2^229520237 is an apocalyptic number.

It is an amenable number.

229520237 is a deficient number, since it is larger than the sum of its proper divisors (1).

229520237 is an equidigital number, since it uses as much as digits as its factorization.

229520237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 229520237 is about 15149.9253133473. The cubic root of 229520237 is about 612.2662605004.

It can be divided in two parts, 22 and 9520237, that added together give a palindrome (9520259).

The spelling of 229520237 in words is "two hundred twenty-nine million, five hundred twenty thousand, two hundred thirty-seven".