1315121363603 has 4 divisors (see below), whose sum is σ = 1315245829680. Its totient is φ = 1314996897528.

The previous prime is 1315121363561. The next prime is 1315121363617. The reversal of 1315121363603 is 3063631215131.

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 1315121363603 - 2²⁴ = 1315104586387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315121363653) 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, 62217188 + ... + 62238321.

It is an arithmetic number, because the mean of its divisors is an integer number (328811457420).

Almost surely, 2^{1315121363603} is an apocalyptic number.

1315121363603 is a deficient number, since it is larger than the sum of its proper divisors (124466077).

1315121363603 is a wasteful number, since it uses less digits than its factorization.

1315121363603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124466076.

The product of its (nonzero) digits is 29160, while the sum is 35.

Adding to 1315121363603 its reverse (3063631215131), we get a palindrome (4378752578734).

The spelling of 1315121363603 in words is "one trillion, three hundred fifteen billion, one hundred twenty-one million, three hundred sixty-three thousand, six hundred three".