1311623113 has 8 divisors (see below), whose sum is σ = 1357518080. Its totient is φ = 1265952240.

The previous prime is 1311623099. The next prime is 1311623123. The reversal of 1311623113 is 3113261131.

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 1311623113 - 2¹³ = 1311614921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311623123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44070 + ... + 67567.

It is an arithmetic number, because the mean of its divisors is an integer number (169689760).

Almost surely, 2^1311623113 is an apocalyptic number.

It is an amenable number.

1311623113 is a deficient number, since it is larger than the sum of its proper divisors (45894967).

1311623113 is a wasteful number, since it uses less digits than its factorization.

1311623113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112047.

The product of its digits is 324, while the sum is 22.

The square root of 1311623113 is about 36216.3376530538. The cubic root of 1311623113 is about 1094.6358993232.

Adding to 1311623113 its reverse (3113261131), we get a palindrome (4424884244).

The spelling of 1311623113 in words is "one billion, three hundred eleven million, six hundred twenty-three thousand, one hundred thirteen".