203131401403213 has 2 divisors, whose sum is σ = 203131401403214. Its totient is φ = 203131401403212.

The previous prime is 203131401403187. The next prime is 203131401403237. The reversal of 203131401403213 is 312304104131302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177778142222409 + 25353259180804 = 13333347^2 + 5035202^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203131401403213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203131401403243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101565700701606 + 101565700701607.

It is an arithmetic number, because the mean of its divisors is an integer number (101565700701607).

Almost surely, 2^{203131401403213} is an apocalyptic number.

It is an amenable number.

203131401403213 is a deficient number, since it is larger than the sum of its proper divisors (1).

203131401403213 is an equidigital number, since it uses as much as digits as its factorization.

203131401403213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 203131401403213 its reverse (312304104131302), we get a palindrome (515435505534515).

The spelling of 203131401403213 in words is "two hundred three trillion, one hundred thirty-one billion, four hundred one million, four hundred three thousand, two hundred thirteen".