720313911 has 8 divisors (see below), whose sum is σ = 1067131760. Its totient is φ = 480209256.

The previous prime is 720313889. The next prime is 720313927. The reversal of 720313911 is 119313027.

It is a de Polignac number, because none of the positive numbers 2^k-720313911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 26678293 = 720313911 / (7 + 2 + 0 + 3 + 1 + 3 + 9 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720323911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13339120 + ... + 13339173.

It is an arithmetic number, because the mean of its divisors is an integer number (133391470).

Almost surely, 2^720313911 is an apocalyptic number.

720313911 is a deficient number, since it is larger than the sum of its proper divisors (346817849).

720313911 is a wasteful number, since it uses less digits than its factorization.

720313911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26678302 (or 26678296 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 720313911 is about 26838.6644786957. The cubic root of 720313911 is about 896.4111861495.

Adding to 720313911 its reverse (119313027), we get a palindrome (839626938).

The spelling of 720313911 in words is "seven hundred twenty million, three hundred thirteen thousand, nine hundred eleven".