280300030529 has 2 divisors, whose sum is σ = 280300030530. Its totient is φ = 280300030528.

The previous prime is 280300030433. The next prime is 280300030531. The reversal of 280300030529 is 925030003082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255611136400 + 24688894129 = 505580^2 + 157127^2 .

It is a cyclic number.

It is not a de Polignac number, because 280300030529 - 2⁸ = 280300030273 is a prime.

It is a super-2 number, since 2×280300030529² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 280300030531, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 280300030495 and 280300030504.

It is not a weakly prime, because it can be changed into another prime (280300020529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140150015264 + 140150015265.

It is an arithmetic number, because the mean of its divisors is an integer number (140150015265).

Almost surely, 2^280300030529 is an apocalyptic number.

It is an amenable number.

280300030529 is a deficient number, since it is larger than the sum of its proper divisors (1).

280300030529 is an equidigital number, since it uses as much as digits as its factorization.

280300030529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 280300030529 in words is "two hundred eighty billion, three hundred million, thirty thousand, five hundred twenty-nine".