1313423240203 has 4 divisors (see below), whose sum is σ = 1313426519568. Its totient is φ = 1313419960840.

The previous prime is 1313423240119. The next prime is 1313423240291. The reversal of 1313423240203 is 3020423243131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313423240203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313423247203) 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, 939151 + ... + 1873192.

It is an arithmetic number, because the mean of its divisors is an integer number (328356629892).

Almost surely, 2^{1313423240203} is an apocalyptic number.

1313423240203 is a deficient number, since it is larger than the sum of its proper divisors (3279365).

1313423240203 is an equidigital number, since it uses as much as digits as its factorization.

1313423240203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279364.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 1313423240203 its reverse (3020423243131), we get a palindrome (4333846483334).

The spelling of 1313423240203 in words is "one trillion, three hundred thirteen billion, four hundred twenty-three million, two hundred forty thousand, two hundred three".