9720233213 has 4 divisors (see below), whose sum is σ = 9738003840. Its totient is φ = 9702462588.

The previous prime is 9720233209. The next prime is 9720233221. The reversal of 9720233213 is 3123320279.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9720233213 - 2² = 9720233209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9720233213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9720233273) 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, 8884493 + ... + 8885586.

It is an arithmetic number, because the mean of its divisors is an integer number (2434500960).

Almost surely, 2^9720233213 is an apocalyptic number.

It is an amenable number.

9720233213 is a deficient number, since it is larger than the sum of its proper divisors (17770627).

9720233213 is a wasteful number, since it uses less digits than its factorization.

9720233213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17770626.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 9720233213 is about 98591.2430847689. The cubic root of 9720233213 is about 2134.1530507419.

The spelling of 9720233213 in words is "nine billion, seven hundred twenty million, two hundred thirty-three thousand, two hundred thirteen".