1331331343 has 4 divisors (see below), whose sum is σ = 1343773800. Its totient is φ = 1318888888.

The previous prime is 1331331329. The next prime is 1331331367. The reversal of 1331331343 is 3431331331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3431331331 = 641 ⋅5353091.

It is a cyclic number.

It is not a de Polignac number, because 1331331343 - 2¹³ = 1331323151 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 (1331331143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6221068 + ... + 6221281.

It is an arithmetic number, because the mean of its divisors is an integer number (335943450).

Almost surely, 2^1331331343 is an apocalyptic number.

1331331343 is a deficient number, since it is larger than the sum of its proper divisors (12442457).

1331331343 is a wasteful number, since it uses less digits than its factorization.

1331331343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12442456.

The product of its digits is 2916, while the sum is 25.

The square root of 1331331343 is about 36487.4134873932. The cubic root of 1331331343 is about 1100.0912714900.

Adding to 1331331343 its reverse (3431331331), we get a palindrome (4762662674).

The spelling of 1331331343 in words is "one billion, three hundred thirty-one million, three hundred thirty-one thousand, three hundred forty-three".