1311433343 has 8 divisors (see below), whose sum is σ = 1492857216. Its totient is φ = 1140376600.

The previous prime is 1311433337. The next prime is 1311433427. The reversal of 1311433343 is 3433341131.

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

It is not a de Polignac number, because 1311433343 - 2¹⁰ = 1311432319 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 (1311433303) 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, 2591513 + ... + 2592018.

It is an arithmetic number, because the mean of its divisors is an integer number (186607152).

Almost surely, 2^1311433343 is an apocalyptic number.

1311433343 is a deficient number, since it is larger than the sum of its proper divisors (181423873).

1311433343 is a wasteful number, since it uses less digits than its factorization.

1311433343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5183565.

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

The square root of 1311433343 is about 36213.7176081109. The cubic root of 1311433343 is about 1094.5831049212.

Adding to 1311433343 its reverse (3433341131), we get a palindrome (4744774474).

The spelling of 1311433343 in words is "one billion, three hundred eleven million, four hundred thirty-three thousand, three hundred forty-three".