213403434313 has 2 divisors, whose sum is σ = 213403434314. Its totient is φ = 213403434312.

The previous prime is 213403434269. The next prime is 213403434323. The reversal of 213403434313 is 313434304312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211845711289 + 1557723024 = 460267^2 + 39468^2 .

It is a cyclic number.

It is not a de Polignac number, because 213403434313 - 2³³ = 204813499721 is a prime.

It is not a weakly prime, because it can be changed into another prime (213403434323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106701717156 + 106701717157.

It is an arithmetic number, because the mean of its divisors is an integer number (106701717157).

Almost surely, 2^213403434313 is an apocalyptic number.

It is an amenable number.

213403434313 is a deficient number, since it is larger than the sum of its proper divisors (1).

213403434313 is an equidigital number, since it uses as much as digits as its factorization.

213403434313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 213403434313 its reverse (313434304312), we get a palindrome (526837738625).

The spelling of 213403434313 in words is "two hundred thirteen billion, four hundred three million, four hundred thirty-four thousand, three hundred thirteen".