213203113243 has 2 divisors, whose sum is σ = 213203113244. Its totient is φ = 213203113242.

The previous prime is 213203113229. The next prime is 213203113259. The reversal of 213203113243 is 342311302312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213203113243 is a prime.

It is not a weakly prime, because it can be changed into another prime (213203173243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106601556621 + 106601556622.

It is an arithmetic number, because the mean of its divisors is an integer number (106601556622).

Almost surely, 2^213203113243 is an apocalyptic number.

213203113243 is a deficient number, since it is larger than the sum of its proper divisors (1).

213203113243 is an equidigital number, since it uses as much as digits as its factorization.

213203113243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 213203113243 its reverse (342311302312), we get a palindrome (555514415555).

The spelling of 213203113243 in words is "two hundred thirteen billion, two hundred three million, one hundred thirteen thousand, two hundred forty-three".