1313720011 has 4 divisors (see below), whose sum is σ = 1328481000. Its totient is φ = 1298959024.

The previous prime is 1313719943. The next prime is 1313720027. The reversal of 1313720011 is 1100273131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1100273131 = 1009 ⋅1090459.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313720011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313720041) 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 3 ways as a sum of consecutive naturals, for example, 7380361 + ... + 7380538.

It is an arithmetic number, because the mean of its divisors is an integer number (332120250).

Almost surely, 2^1313720011 is an apocalyptic number.

1313720011 is a deficient number, since it is larger than the sum of its proper divisors (14760989).

1313720011 is an equidigital number, since it uses as much as digits as its factorization.

1313720011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14760988.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 1313720011 is about 36245.2757059455. The cubic root of 1313720011 is about 1095.2189219157.

Adding to 1313720011 its reverse (1100273131), we get a palindrome (2413993142).

The spelling of 1313720011 in words is "one billion, three hundred thirteen million, seven hundred twenty thousand, eleven".