30320320309 has 2 divisors, whose sum is σ = 30320320310. Its totient is φ = 30320320308.

The previous prime is 30320320243. The next prime is 30320320343. The reversal of 30320320309 is 90302302303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24589376100 + 5730944209 = 156810^2 + 75703^2 .

It is a cyclic number.

It is not a de Polignac number, because 30320320309 - 2²⁵ = 30286765877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30320320379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15160160154 + 15160160155.

It is an arithmetic number, because the mean of its divisors is an integer number (15160160155).

Almost surely, 2^30320320309 is an apocalyptic number.

It is an amenable number.

30320320309 is a deficient number, since it is larger than the sum of its proper divisors (1).

30320320309 is an equidigital number, since it uses as much as digits as its factorization.

30320320309 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 25.

The spelling of 30320320309 in words is "thirty billion, three hundred twenty million, three hundred twenty thousand, three hundred nine".