1311688423 has 2 divisors, whose sum is σ = 1311688424. Its totient is φ = 1311688422.

The previous prime is 1311688421. The next prime is 1311688447. The reversal of 1311688423 is 3248861131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311688423 - 2¹ = 1311688421 is a prime.

Together with 1311688421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311688421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655844211 + 655844212.

It is an arithmetic number, because the mean of its divisors is an integer number (655844212).

Almost surely, 2^1311688423 is an apocalyptic number.

1311688423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311688423 is an equidigital number, since it uses as much as digits as its factorization.

1311688423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 1311688423 is about 36217.2393067169. The cubic root of 1311688423 is about 1094.6540675209.

The spelling of 1311688423 in words is "one billion, three hundred eleven million, six hundred eighty-eight thousand, four hundred twenty-three".