280317113 has 2 divisors, whose sum is σ = 280317114. Its totient is φ = 280317112.

The previous prime is 280317073. The next prime is 280317133. The reversal of 280317113 is 311713082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279290944 + 1026169 = 16712^2 + 1013^2 .

It is a cyclic number.

It is not a de Polignac number, because 280317113 - 2⁸ = 280316857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (280317133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140158556 + 140158557.

It is an arithmetic number, because the mean of its divisors is an integer number (140158557).

Almost surely, 2^280317113 is an apocalyptic number.

It is an amenable number.

280317113 is a deficient number, since it is larger than the sum of its proper divisors (1).

280317113 is an equidigital number, since it uses as much as digits as its factorization.

280317113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 280317113 is about 16742.6734125706. The cubic root of 280317113 is about 654.4601444904.

The spelling of 280317113 in words is "two hundred eighty million, three hundred seventeen thousand, one hundred thirteen".