1311120343 has 8 divisors (see below), whose sum is σ = 1424931200. Its totient is φ = 1199160288.

The previous prime is 1311120341. The next prime is 1311120347. The reversal of 1311120343 is 3430211131.

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

It is a cyclic number.

It is not a de Polignac number, because 1311120343 - 2¹ = 1311120341 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 1311120343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311120341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461223 + ... + 464056.

It is an arithmetic number, because the mean of its divisors is an integer number (178116400).

Almost surely, 2^1311120343 is an apocalyptic number.

1311120343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1311120343 is a deficient number, since it is larger than the sum of its proper divisors (113810857).

1311120343 is a wasteful number, since it uses less digits than its factorization.

1311120343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925401.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1311120343 is about 36209.3957834151. The cubic root of 1311120343 is about 1094.4960165524.

Adding to 1311120343 its reverse (3430211131), we get a palindrome (4741331474).

The spelling of 1311120343 in words is "one billion, three hundred eleven million, one hundred twenty thousand, three hundred forty-three".