7130721233 has 2 divisors, whose sum is σ = 7130721234. Its totient is φ = 7130721232.

The previous prime is 7130721217. The next prime is 7130721239. The reversal of 7130721233 is 3321270317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6718753024 + 411968209 = 81968^2 + 20297^2 .

It is an emirp because it is prime and its reverse (3321270317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7130721233 - 2⁴ = 7130721217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7130721196 and 7130721205.

It is not a weakly prime, because it can be changed into another prime (7130721239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3565360616 + 3565360617.

It is an arithmetic number, because the mean of its divisors is an integer number (3565360617).

Almost surely, 2^7130721233 is an apocalyptic number.

It is an amenable number.

7130721233 is a deficient number, since it is larger than the sum of its proper divisors (1).

7130721233 is an equidigital number, since it uses as much as digits as its factorization.

7130721233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 7130721233 is about 84443.5979396899. The cubic root of 7130721233 is about 1924.7654727943.

The spelling of 7130721233 in words is "seven billion, one hundred thirty million, seven hundred twenty-one thousand, two hundred thirty-three".