30312523504145 has 4 divisors (see below), whose sum is σ = 36375028204980. Its totient is φ = 24250018803312.

The previous prime is 30312523504141. The next prime is 30312523504177. The reversal of 30312523504145 is 54140532521303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5403969726736 + 24908553777409 = 2324644^2 + 4990847^2 .

It is a cyclic number.

It is not a de Polignac number, because 30312523504145 - 2² = 30312523504141 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30312523504099 and 30312523504108.

It is not an unprimeable number, because it can be changed into a prime (30312523504141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3031252350410 + ... + 3031252350419.

It is an arithmetic number, because the mean of its divisors is an integer number (9093757051245).

Almost surely, 2^{30312523504145} is an apocalyptic number.

It is an amenable number.

30312523504145 is a deficient number, since it is larger than the sum of its proper divisors (6062504700835).

30312523504145 is an equidigital number, since it uses as much as digits as its factorization.

30312523504145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6062504700834.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 30312523504145 in words is "thirty trillion, three hundred twelve billion, five hundred twenty-three million, five hundred four thousand, one hundred forty-five".