213020130137 has 2 divisors, whose sum is σ = 213020130138. Its totient is φ = 213020130136.

The previous prime is 213020130119. The next prime is 213020130203. The reversal of 213020130137 is 731031020312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122749326736 + 90270803401 = 350356^2 + 300451^2 .

It is a cyclic number.

It is not a de Polignac number, because 213020130137 - 2¹² = 213020126041 is a prime.

It is not a weakly prime, because it can be changed into another prime (213025130137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106510065068 + 106510065069.

It is an arithmetic number, because the mean of its divisors is an integer number (106510065069).

Almost surely, 2^213020130137 is an apocalyptic number.

It is an amenable number.

213020130137 is a deficient number, since it is larger than the sum of its proper divisors (1).

213020130137 is an equidigital number, since it uses as much as digits as its factorization.

213020130137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

Adding to 213020130137 its reverse (731031020312), we get a palindrome (944051150449).

The spelling of 213020130137 in words is "two hundred thirteen billion, twenty million, one hundred thirty thousand, one hundred thirty-seven".