203120113213 has 2 divisors, whose sum is σ = 203120113214. Its totient is φ = 203120113212.

The previous prime is 203120113211. The next prime is 203120113241. The reversal of 203120113213 is 312311021302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140761533124 + 62358580089 = 375182^2 + 249717^2 .

It is a cyclic number.

It is not a de Polignac number, because 203120113213 - 2¹ = 203120113211 is a prime.

Together with 203120113211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203120113211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101560056606 + 101560056607.

It is an arithmetic number, because the mean of its divisors is an integer number (101560056607).

Almost surely, 2^203120113213 is an apocalyptic number.

It is an amenable number.

203120113213 is a deficient number, since it is larger than the sum of its proper divisors (1).

203120113213 is an equidigital number, since it uses as much as digits as its factorization.

203120113213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 203120113213 its reverse (312311021302), we get a palindrome (515431134515).

The spelling of 203120113213 in words is "two hundred three billion, one hundred twenty million, one hundred thirteen thousand, two hundred thirteen".