7230991 has 2 divisors, whose sum is σ = 7230992. Its totient is φ = 7230990.

The previous prime is 7230961. The next prime is 7231013. The reversal of 7230991 is 1990327.

It is a strong prime.

It is an emirp because it is prime and its reverse (1990327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7230991 - 2⁹ = 7230479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7230911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3615495 + 3615496.

It is an arithmetic number, because the mean of its divisors is an integer number (3615496).

Almost surely, 2^7230991 is an apocalyptic number.

7230991 is a deficient number, since it is larger than the sum of its proper divisors (1).

7230991 is an equidigital number, since it uses as much as digits as its factorization.

7230991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 7230991 is about 2689.0502040683. The cubic root of 7230991 is about 193.3745311200.

The spelling of 7230991 in words is "seven million, two hundred thirty thousand, nine hundred ninety-one".