30312502189 has 2 divisors, whose sum is σ = 30312502190. Its totient is φ = 30312502188.

The previous prime is 30312502153. The next prime is 30312502247. The reversal of 30312502189 is 98120521303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25077256164 + 5235246025 = 158358^2 + 72355^2 .

It is a cyclic number.

It is not a de Polignac number, because 30312502189 - 2¹⁹ = 30311977901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30312500189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15156251094 + 15156251095.

It is an arithmetic number, because the mean of its divisors is an integer number (15156251095).

Almost surely, 2^30312502189 is an apocalyptic number.

It is an amenable number.

30312502189 is a deficient number, since it is larger than the sum of its proper divisors (1).

30312502189 is an equidigital number, since it uses as much as digits as its factorization.

30312502189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 30312502189 in words is "thirty billion, three hundred twelve million, five hundred two thousand, one hundred eighty-nine".