1313013531303 has 8 divisors (see below), whose sum is σ = 1945205231600. Its totient is φ = 875342354184.

The previous prime is 1313013531283. The next prime is 1313013531317. The reversal of 1313013531303 is 3031353103131.

1313013531303 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 0 + 1 + 353 + 1 + 303 = 666.

It is not a de Polignac number, because 1313013531303 - 2⁶ = 1313013531239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 48630130789 = 1313013531303 / (1 + 3 + 1 + 3 + 0 + 1 + 3 + 5 + 3 + 1 + 3 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313013531503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24315065368 + ... + 24315065421.

It is an arithmetic number, because the mean of its divisors is an integer number (243150653950).

Almost surely, 2^{1313013531303} is an apocalyptic number.

1313013531303 is a deficient number, since it is larger than the sum of its proper divisors (632191700297).

1313013531303 is an equidigital number, since it uses as much as digits as its factorization.

1313013531303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48630130798 (or 48630130792 counting only the distinct ones).

The product of its (nonzero) digits is 3645, while the sum is 27.

Adding to 1313013531303 its reverse (3031353103131), we get a palindrome (4344366634434).

The spelling of 1313013531303 in words is "one trillion, three hundred thirteen billion, thirteen million, five hundred thirty-one thousand, three hundred three".