1301317823 has 4 divisors (see below), whose sum is σ = 1401419208. Its totient is φ = 1201216440.

The previous prime is 1301317807. The next prime is 1301317837. The reversal of 1301317823 is 3287131031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1301317823 - 2⁴ = 1301317807 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 (1301317123) 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, 50050673 + ... + 50050698.

It is an arithmetic number, because the mean of its divisors is an integer number (350354802).

Almost surely, 2^1301317823 is an apocalyptic number.

1301317823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1301317823 is a deficient number, since it is larger than the sum of its proper divisors (100101385).

1301317823 is a wasteful number, since it uses less digits than its factorization.

1301317823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100101384.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 1301317823 is about 36073.7830425366. The cubic root of 1301317823 is about 1091.7615438106.

Adding to 1301317823 its reverse (3287131031), we get a palindrome (4588448854).

The spelling of 1301317823 in words is "one billion, three hundred one million, three hundred seventeen thousand, eight hundred twenty-three".