30873397 has 2 divisors, whose sum is σ = 30873398. Its totient is φ = 30873396.

The previous prime is 30873317. The next prime is 30873413. The reversal of 30873397 is 79337803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23951236 + 6922161 = 4894^2 + 2631^2 .

It is an emirp because it is prime and its reverse (79337803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30873397 - 2¹¹ = 30871349 is a prime.

It is equal to p_1908679 and since 30873397 and 1908679 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30873317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15436698 + 15436699.

It is an arithmetic number, because the mean of its divisors is an integer number (15436699).

Almost surely, 2^30873397 is an apocalyptic number.

It is an amenable number.

30873397 is a deficient number, since it is larger than the sum of its proper divisors (1).

30873397 is an equidigital number, since it uses as much as digits as its factorization.

30873397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 30873397 is about 5556.3834460915. The cubic root of 30873397 is about 313.7098385126.

The spelling of 30873397 in words is "thirty million, eight hundred seventy-three thousand, three hundred ninety-seven".