30873481 has 2 divisors, whose sum is σ = 30873482. Its totient is φ = 30873480.

The previous prime is 30873473. The next prime is 30873497. The reversal of 30873481 is 18437803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29160000 + 1713481 = 5400^2 + 1309^2 .

It is a cyclic number.

It is not a de Polignac number, because 30873481 - 2³ = 30873473 is a prime.

It is a super-2 number, since 2×30873481² = 1906343658114722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30873421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15436740 + 15436741.

It is an arithmetic number, because the mean of its divisors is an integer number (15436741).

Almost surely, 2^30873481 is an apocalyptic number.

It is an amenable number.

30873481 is a deficient number, since it is larger than the sum of its proper divisors (1).

30873481 is an equidigital number, since it uses as much as digits as its factorization.

30873481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 30873481 is about 5556.3910049600. The cubic root of 30873481 is about 313.7101230251.

The spelling of 30873481 in words is "thirty million, eight hundred seventy-three thousand, four hundred eighty-one".