1313220013203 has 32 divisors (see below), whose sum is σ = 2006777203200. Its totient is φ = 748282219776.

The previous prime is 1313220013187. The next prime is 1313220013211. The reversal of 1313220013203 is 3023100223131.

It is not a de Polignac number, because 1313220013203 - 2⁴ = 1313220013187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1313220013203.

It is not an unprimeable number, because it can be changed into a prime (1313220013223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49117543 + ... + 49144271.

It is an arithmetic number, because the mean of its divisors is an integer number (62711787600).

Almost surely, 2^{1313220013203} is an apocalyptic number.

1313220013203 is a deficient number, since it is larger than the sum of its proper divisors (693557189997).

1313220013203 is a wasteful number, since it uses less digits than its factorization.

1313220013203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33291.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1313220013203 its reverse (3023100223131), we get a palindrome (4336320236334).

The spelling of 1313220013203 in words is "one trillion, three hundred thirteen billion, two hundred twenty million, thirteen thousand, two hundred three".