1313311100203 has 2 divisors, whose sum is σ = 1313311100204. Its totient is φ = 1313311100202.

The previous prime is 1313311100201. The next prime is 1313311100219. The reversal of 1313311100203 is 3020011133131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313311100203 - 2¹ = 1313311100201 is a prime.

Together with 1313311100201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1313311100201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656655550101 + 656655550102.

It is an arithmetic number, because the mean of its divisors is an integer number (656655550102).

Almost surely, 2^{1313311100203} is an apocalyptic number.

1313311100203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313311100203 is an equidigital number, since it uses as much as digits as its factorization.

1313311100203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 1313311100203 its reverse (3020011133131), we get a palindrome (4333322233334).

The spelling of 1313311100203 in words is "one trillion, three hundred thirteen billion, three hundred eleven million, one hundred thousand, two hundred three".