711997213 has 4 divisors (see below), whose sum is σ = 753879420. Its totient is φ = 670115008.

The previous prime is 711997207. The next prime is 711997261. The reversal of 711997213 is 312799117.

711997213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 624350169 + 87647044 = 24987^2 + 9362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-711997213 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 (711997613) 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, 20941078 + ... + 20941111.

It is an arithmetic number, because the mean of its divisors is an integer number (188469855).

Almost surely, 2^711997213 is an apocalyptic number.

It is an amenable number.

711997213 is a deficient number, since it is larger than the sum of its proper divisors (41882207).

711997213 is a wasteful number, since it uses less digits than its factorization.

711997213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41882206.

The product of its digits is 23814, while the sum is 40.

The square root of 711997213 is about 26683.2759045811. The cubic root of 711997213 is about 892.9478540176.

The spelling of 711997213 in words is "seven hundred eleven million, nine hundred ninety-seven thousand, two hundred thirteen".