1312280113 has 2 divisors, whose sum is σ = 1312280114. Its totient is φ = 1312280112.

The previous prime is 1312280093. The next prime is 1312280143. The reversal of 1312280113 is 3110822131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1023552049 + 288728064 = 31993^2 + 16992^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312280113 - 2⁹ = 1312279601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312280143) 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, 656140056 + 656140057.

It is an arithmetic number, because the mean of its divisors is an integer number (656140057).

Almost surely, 2^1312280113 is an apocalyptic number.

It is an amenable number.

1312280113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312280113 is an equidigital number, since it uses as much as digits as its factorization.

1312280113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1312280113 is about 36225.4070094457. The cubic root of 1312280113 is about 1094.8186387429.

The spelling of 1312280113 in words is "one billion, three hundred twelve million, two hundred eighty thousand, one hundred thirteen".