1311344423 has 8 divisors (see below), whose sum is σ = 1368858240. Its totient is φ = 1254781440.

The previous prime is 1311344393. The next prime is 1311344431. The reversal of 1311344423 is 3244431131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311344423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311344392 and 1311344401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311364423) 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, 234890 + ... + 240407.

It is an arithmetic number, because the mean of its divisors is an integer number (171107280).

Almost surely, 2^1311344423 is an apocalyptic number.

1311344423 is a deficient number, since it is larger than the sum of its proper divisors (57513817).

1311344423 is an equidigital number, since it uses as much as digits as its factorization.

1311344423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475417.

The product of its digits is 3456, while the sum is 26.

The square root of 1311344423 is about 36212.4898757321. The cubic root of 1311344423 is about 1094.5583654431.

Adding to 1311344423 its reverse (3244431131), we get a palindrome (4555775554).

The spelling of 1311344423 in words is "one billion, three hundred eleven million, three hundred forty-four thousand, four hundred twenty-three".