30703997 has 2 divisors, whose sum is σ = 30703998. Its totient is φ = 30703996.

The previous prime is 30703993. The next prime is 30704033. The reversal of 30703997 is 79930703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27994681 + 2709316 = 5291^2 + 1646^2 .

It is an emirp because it is prime and its reverse (79930703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30703997 - 2² = 30703993 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30703997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30703993) 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, 15351998 + 15351999.

It is an arithmetic number, because the mean of its divisors is an integer number (15351999).

Almost surely, 2^30703997 is an apocalyptic number.

It is an amenable number.

30703997 is a deficient number, since it is larger than the sum of its proper divisors (1).

30703997 is an equidigital number, since it uses as much as digits as its factorization.

30703997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35721, while the sum is 38.

The square root of 30703997 is about 5541.1187498555. The cubic root of 30703997 is about 313.1350184908.

The spelling of 30703997 in words is "thirty million, seven hundred three thousand, nine hundred ninety-seven".