1311334343 has 16 divisors (see below), whose sum is σ = 1511341440. Its totient is φ = 1125252000.

The previous prime is 1311334337. The next prime is 1311334363. The reversal of 1311334343 is 3434331131.

It is a cyclic number.

It is not a de Polignac number, because 1311334343 - 2¹⁶ = 1311268807 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 (1311334313) 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, 46568 + ... + 69218.

It is an arithmetic number, because the mean of its divisors is an integer number (94458840).

Almost surely, 2^1311334343 is an apocalyptic number.

1311334343 is a deficient number, since it is larger than the sum of its proper divisors (200007097).

1311334343 is a wasteful number, since it uses less digits than its factorization.

1311334343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22958.

The product of its digits is 3888, while the sum is 26.

The square root of 1311334343 is about 36212.3506969653. The cubic root of 1311334343 is about 1094.5555608973. Note that the first 4 decimals are identical.

Adding to 1311334343 its reverse (3434331131), we get a palindrome (4745665474).

The spelling of 1311334343 in words is "one billion, three hundred eleven million, three hundred thirty-four thousand, three hundred forty-three".