1313003143 has 16 divisors (see below), whose sum is σ = 1401079680. Its totient is φ = 1226176000.

The previous prime is 1313003077. The next prime is 1313003173. The reversal of 1313003143 is 3413003131.

It is a de Polignac number, because none of the positive numbers 2^k-1313003143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313003143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313003173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1872693 + ... + 1873393.

It is an arithmetic number, because the mean of its divisors is an integer number (87567480).

Almost surely, 2^1313003143 is an apocalyptic number.

1313003143 is a deficient number, since it is larger than the sum of its proper divisors (88076537).

1313003143 is a wasteful number, since it uses less digits than its factorization.

1313003143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1313003143 is about 36235.3852332220. The cubic root of 1313003143 is about 1095.0196734092.

Adding to 1313003143 its reverse (3413003131), we get a palindrome (4726006274).

The spelling of 1313003143 in words is "one billion, three hundred thirteen million, three thousand, one hundred forty-three".