1230213137 has 2 divisors, whose sum is σ = 1230213138. Its totient is φ = 1230213136.

The previous prime is 1230213079. The next prime is 1230213181. The reversal of 1230213137 is 7313120321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656179456 + 574033681 = 25616^2 + 23959^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230213137 - 2²⁴ = 1213435921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1230213637) 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, 615106568 + 615106569.

It is an arithmetic number, because the mean of its divisors is an integer number (615106569).

Almost surely, 2^1230213137 is an apocalyptic number.

It is an amenable number.

1230213137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230213137 is an equidigital number, since it uses as much as digits as its factorization.

1230213137 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1230213137 is about 35074.3943212139. The cubic root of 1230213137 is about 1071.5031533192.

Adding to 1230213137 its reverse (7313120321), we get a palindrome (8543333458).

The spelling of 1230213137 in words is "one billion, two hundred thirty million, two hundred thirteen thousand, one hundred thirty-seven".