30475240309 has 2 divisors, whose sum is σ = 30475240310. Its totient is φ = 30475240308.

The previous prime is 30475240267. The next prime is 30475240319. The reversal of 30475240309 is 90304257403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24119643025 + 6355597284 = 155305^2 + 79722^2 .

It is a cyclic number.

It is not a de Polignac number, because 30475240309 - 2²¹ = 30473143157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30475240319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15237620154 + 15237620155.

It is an arithmetic number, because the mean of its divisors is an integer number (15237620155).

Almost surely, 2^30475240309 is an apocalyptic number.

It is an amenable number.

30475240309 is a deficient number, since it is larger than the sum of its proper divisors (1).

30475240309 is an equidigital number, since it uses as much as digits as its factorization.

30475240309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 30475240309 in words is "thirty billion, four hundred seventy-five million, two hundred forty thousand, three hundred nine".