30972593 has 2 divisors, whose sum is σ = 30972594. Its totient is φ = 30972592.

The previous prime is 30972587. The next prime is 30972607. The reversal of 30972593 is 39527903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16096144 + 14876449 = 4012^2 + 3857^2 .

It is an emirp because it is prime and its reverse (39527903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30972593 - 2²⁰ = 29924017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30972523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15486296 + 15486297.

It is an arithmetic number, because the mean of its divisors is an integer number (15486297).

Almost surely, 2^30972593 is an apocalyptic number.

It is an amenable number.

30972593 is a deficient number, since it is larger than the sum of its proper divisors (1).

30972593 is an equidigital number, since it uses as much as digits as its factorization.

30972593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 38.

The square root of 30972593 is about 5565.3025973437. The cubic root of 30972593 is about 314.0454617936.

The spelling of 30972593 in words is "thirty million, nine hundred seventy-two thousand, five hundred ninety-three".