1317314443943 has 18 divisors (see below), whose sum is σ = 1390724532504. Its totient is φ = 1245418825728.

The previous prime is 1317314443931. The next prime is 1317314443969. The reversal of 1317314443943 is 3493444137131.

It is a de Polignac number, because none of the positive numbers 2^k-1317314443943 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317314443843) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 489888743 + ... + 489891431.

It is an arithmetic number, because the mean of its divisors is an integer number (77262474028).

Almost surely, 2^{1317314443943} is an apocalyptic number.

1317314443943 is a deficient number, since it is larger than the sum of its proper divisors (73410088561).

1317314443943 is an frugal number, since it uses more digits than its factorization.

1317314443943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579 (or 2801 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 47.

The spelling of 1317314443943 in words is "one trillion, three hundred seventeen billion, three hundred fourteen million, four hundred forty-three thousand, nine hundred forty-three".