213134230357 has 2 divisors, whose sum is σ = 213134230358. Its totient is φ = 213134230356.

The previous prime is 213134230321. The next prime is 213134230403. The reversal of 213134230357 is 753032431312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194211201636 + 18923028721 = 440694^2 + 137561^2 .

It is a cyclic number.

It is not a de Polignac number, because 213134230357 - 2⁷ = 213134230229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213134230307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106567115178 + 106567115179.

It is an arithmetic number, because the mean of its divisors is an integer number (106567115179).

Almost surely, 2^213134230357 is an apocalyptic number.

It is an amenable number.

213134230357 is a deficient number, since it is larger than the sum of its proper divisors (1).

213134230357 is an equidigital number, since it uses as much as digits as its factorization.

213134230357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 34.

Adding to 213134230357 its reverse (753032431312), we get a palindrome (966166661669).

The spelling of 213134230357 in words is "two hundred thirteen billion, one hundred thirty-four million, two hundred thirty thousand, three hundred fifty-seven".