1316121343 has 8 divisors (see below), whose sum is σ = 1324691280. Its totient is φ = 1307570880.

The previous prime is 1316121329. The next prime is 1316121353. The reversal of 1316121343 is 3431216131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1316121343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316121353) 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, 145528 + ... + 154306.

It is an arithmetic number, because the mean of its divisors is an integer number (165586410).

Almost surely, 2^1316121343 is an apocalyptic number.

1316121343 is a deficient number, since it is larger than the sum of its proper divisors (8569937).

1316121343 is an equidigital number, since it uses as much as digits as its factorization.

1316121343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9737.

The product of its digits is 1296, while the sum is 25.

The square root of 1316121343 is about 36278.3867199191. The cubic root of 1316121343 is about 1095.8858279559.

Adding to 1316121343 its reverse (3431216131), we get a palindrome (4747337474).

The spelling of 1316121343 in words is "one billion, three hundred sixteen million, one hundred twenty-one thousand, three hundred forty-three".