1311032433311 has 4 divisors (see below), whose sum is σ = 1311034743312. Its totient is φ = 1311030123312.

The previous prime is 1311032433307. The next prime is 1311032433313. The reversal of 1311032433311 is 1133342301131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1311032433311 - 2² = 1311032433307 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 (1311032433313) 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, 350051 + ... + 1656683.

It is an arithmetic number, because the mean of its divisors is an integer number (327758685828).

Almost surely, 2^{1311032433311} is an apocalyptic number.

1311032433311 is a deficient number, since it is larger than the sum of its proper divisors (2310001).

1311032433311 is a wasteful number, since it uses less digits than its factorization.

1311032433311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310000.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 1311032433311 its reverse (1133342301131), we get a palindrome (2444374734442).

The spelling of 1311032433311 in words is "one trillion, three hundred eleven billion, thirty-two million, four hundred thirty-three thousand, three hundred eleven".