213230102237 has 2 divisors, whose sum is σ = 213230102238. Its totient is φ = 213230102236.

The previous prime is 213230102233. The next prime is 213230102287. The reversal of 213230102237 is 732201032312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135608799001 + 77621303236 = 368251^2 + 278606^2 .

It is a cyclic number.

It is not a de Polignac number, because 213230102237 - 2² = 213230102233 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213230102233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106615051118 + 106615051119.

It is an arithmetic number, because the mean of its divisors is an integer number (106615051119).

Almost surely, 2^213230102237 is an apocalyptic number.

It is an amenable number.

213230102237 is a deficient number, since it is larger than the sum of its proper divisors (1).

213230102237 is an equidigital number, since it uses as much as digits as its factorization.

213230102237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 26.

Adding to 213230102237 its reverse (732201032312), we get a palindrome (945431134549).

The spelling of 213230102237 in words is "two hundred thirteen billion, two hundred thirty million, one hundred two thousand, two hundred thirty-seven".