30875081 has 2 divisors, whose sum is σ = 30875082. Its totient is φ = 30875080.

The previous prime is 30875069. The next prime is 30875093. The reversal of 30875081 is 18057803.

It is a balanced prime because it is at equal distance from previous prime (30875069) and next prime (30875093).

It can be written as a sum of positive squares in only one way, i.e., 28185481 + 2689600 = 5309^2 + 1640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30875081 is a prime.

It is a super-2 number, since 2×30875081² = 1906541253513122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30875011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15437540 + 15437541.

It is an arithmetic number, because the mean of its divisors is an integer number (15437541).

Almost surely, 2^30875081 is an apocalyptic number.

It is an amenable number.

30875081 is a deficient number, since it is larger than the sum of its proper divisors (1).

30875081 is an equidigital number, since it uses as much as digits as its factorization.

30875081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 30875081 is about 5556.5349814430. The cubic root of 30875081 is about 313.7155422124.

The spelling of 30875081 in words is "thirty million, eight hundred seventy-five thousand, eighty-one".