1313212331103 has 4 divisors (see below), whose sum is σ = 1750949774808. Its totient is φ = 875474887400.

The previous prime is 1313212331087. The next prime is 1313212331113. The reversal of 1313212331103 is 3011332123131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1313212331103 - 2⁴ = 1313212331087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313212331113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218868721848 + ... + 218868721853.

It is an arithmetic number, because the mean of its divisors is an integer number (437737443702).

Almost surely, 2^{1313212331103} is an apocalyptic number.

1313212331103 is a deficient number, since it is larger than the sum of its proper divisors (437737443705).

1313212331103 is an equidigital number, since it uses as much as digits as its factorization.

1313212331103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437737443704.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1313212331103 its reverse (3011332123131), we get a palindrome (4324544454234).

The spelling of 1313212331103 in words is "one trillion, three hundred thirteen billion, two hundred twelve million, three hundred thirty-one thousand, one hundred three".