30975481 has 2 divisors, whose sum is σ = 30975482. Its totient is φ = 30975480.

The previous prime is 30975463. The next prime is 30975487. The reversal of 30975481 is 18457903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18662400 + 12313081 = 4320^2 + 3509^2 .

It is a cyclic number.

It is not a de Polignac number, because 30975481 - 2⁵ = 30975449 is a prime.

It is a super-2 number, since 2×30975481² = 1918960846362722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30975481.

It is not a weakly prime, because it can be changed into another prime (30975487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15487740 + 15487741.

It is an arithmetic number, because the mean of its divisors is an integer number (15487741).

Almost surely, 2^30975481 is an apocalyptic number.

It is an amenable number.

30975481 is a deficient number, since it is larger than the sum of its proper divisors (1).

30975481 is an equidigital number, since it uses as much as digits as its factorization.

30975481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 30975481 is about 5565.5620560730. The cubic root of 30975481 is about 314.0552224133.

The spelling of 30975481 in words is "thirty million, nine hundred seventy-five thousand, four hundred eighty-one".