1311342911 has 8 divisors (see below), whose sum is σ = 1346051520. Its totient is φ = 1276918048.

The previous prime is 1311342899. The next prime is 1311342917. The reversal of 1311342911 is 1192431131.

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 1311342911 - 2⁶ = 1311342847 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 (1311342917) 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, 61556 + ... + 80073.

It is an arithmetic number, because the mean of its divisors is an integer number (168256440).

Almost surely, 2^1311342911 is an apocalyptic number.

1311342911 is a deficient number, since it is larger than the sum of its proper divisors (34708609).

1311342911 is a wasteful number, since it uses less digits than its factorization.

1311342911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141873.

The product of its digits is 648, while the sum is 26.

The square root of 1311342911 is about 36212.4689989512. The cubic root of 1311342911 is about 1094.5579447621.

The spelling of 1311342911 in words is "one billion, three hundred eleven million, three hundred forty-two thousand, nine hundred eleven".