30871039457 has 2 divisors, whose sum is σ = 30871039458. Its totient is φ = 30871039456.

The previous prime is 30871039403. The next prime is 30871039523. The reversal of 30871039457 is 75493017803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16710991441 + 14160048016 = 129271^2 + 118996^2 .

It is a cyclic number.

It is not a de Polignac number, because 30871039457 - 2¹² = 30871035361 is a prime.

It is not a weakly prime, because it can be changed into another prime (30871039357) 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, 15435519728 + 15435519729.

It is an arithmetic number, because the mean of its divisors is an integer number (15435519729).

Almost surely, 2^30871039457 is an apocalyptic number.

It is an amenable number.

30871039457 is a deficient number, since it is larger than the sum of its proper divisors (1).

30871039457 is an equidigital number, since it uses as much as digits as its factorization.

30871039457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 30871039457 in words is "thirty billion, eight hundred seventy-one million, thirty-nine thousand, four hundred fifty-seven".