923203009 has 2 divisors, whose sum is σ = 923203010. Its totient is φ = 923203008.

The previous prime is 923203007. The next prime is 923203013. The reversal of 923203009 is 900302329.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 687488400 + 235714609 = 26220^2 + 15353^2 .

It is an emirp because it is prime and its reverse (900302329) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 923203009 - 2¹ = 923203007 is a prime.

Together with 923203007, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (923203007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461601504 + 461601505.

It is an arithmetic number, because the mean of its divisors is an integer number (461601505).

Almost surely, 2^923203009 is an apocalyptic number.

It is an amenable number.

923203009 is a deficient number, since it is larger than the sum of its proper divisors (1).

923203009 is an equidigital number, since it uses as much as digits as its factorization.

923203009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 923203009 is about 30384.2559395487. The cubic root of 923203009 is about 973.7162184309.

The spelling of 923203009 in words is "nine hundred twenty-three million, two hundred three thousand, nine".