9231913 has 2 divisors, whose sum is σ = 9231914. Its totient is φ = 9231912.

The previous prime is 9231899. The next prime is 9231919. The reversal of 9231913 is 3191329.

9231913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5890329 + 3341584 = 2427^2 + 1828^2 .

It is an emirp because it is prime and its reverse (3191329) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9231913 - 2⁹ = 9231401 is a prime.

It is not a weakly prime, because it can be changed into another prime (9231919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4615956 + 4615957.

It is an arithmetic number, because the mean of its divisors is an integer number (4615957).

Almost surely, 2^9231913 is an apocalyptic number.

It is an amenable number.

9231913 is a deficient number, since it is larger than the sum of its proper divisors (1).

9231913 is an equidigital number, since it uses as much as digits as its factorization.

9231913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458, while the sum is 28.

The square root of 9231913 is about 3038.4063256912. The cubic root of 9231913 is about 209.7799130351.

The spelling of 9231913 in words is "nine million, two hundred thirty-one thousand, nine hundred thirteen".