320229109 has 2 divisors, whose sum is σ = 320229110. Its totient is φ = 320229108.

The previous prime is 320229073. The next prime is 320229131. The reversal of 320229109 is 901922023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246647025 + 73582084 = 15705^2 + 8578^2 .

It is a cyclic number.

It is not a de Polignac number, because 320229109 - 2²⁵ = 286674677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320229139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160114554 + 160114555.

It is an arithmetic number, because the mean of its divisors is an integer number (160114555).

Almost surely, 2^320229109 is an apocalyptic number.

It is an amenable number.

320229109 is a deficient number, since it is larger than the sum of its proper divisors (1).

320229109 is an equidigital number, since it uses as much as digits as its factorization.

320229109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 320229109 is about 17894.9464654131. The cubic root of 320229109 is about 684.1535775949.

The spelling of 320229109 in words is "three hundred twenty million, two hundred twenty-nine thousand, one hundred nine".