203311131101213 has 2 divisors, whose sum is σ = 203311131101214. Its totient is φ = 203311131101212.

The previous prime is 203311131101203. The next prime is 203311131101219. The reversal of 203311131101213 is 312101131113302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184471729069369 + 18839402031844 = 13582037^2 + 4340438^2 .

It is a cyclic number.

It is not a de Polignac number, because 203311131101213 - 2³² = 203306836133917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203311131101219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101655565550606 + 101655565550607.

It is an arithmetic number, because the mean of its divisors is an integer number (101655565550607).

Almost surely, 2^{203311131101213} is an apocalyptic number.

It is an amenable number.

203311131101213 is a deficient number, since it is larger than the sum of its proper divisors (1).

203311131101213 is an equidigital number, since it uses as much as digits as its factorization.

203311131101213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 203311131101213 its reverse (312101131113302), we get a palindrome (515412262214515).

The spelling of 203311131101213 in words is "two hundred three trillion, three hundred eleven billion, one hundred thirty-one million, one hundred one thousand, two hundred thirteen".