30814261 has 2 divisors, whose sum is σ = 30814262. Its totient is φ = 30814260.

The previous prime is 30814237. The next prime is 30814271. The reversal of 30814261 is 16241803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28826161 + 1988100 = 5369^2 + 1410^2 .

It is an emirp because it is prime and its reverse (16241803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30814261 - 2²¹ = 28717109 is a prime.

It is a super-2 number, since 2×30814261² = 1899037361952242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30814271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15407130 + 15407131.

It is an arithmetic number, because the mean of its divisors is an integer number (15407131).

Almost surely, 2^30814261 is an apocalyptic number.

It is an amenable number.

30814261 is a deficient number, since it is larger than the sum of its proper divisors (1).

30814261 is an equidigital number, since it uses as much as digits as its factorization.

30814261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 30814261 is about 5551.0594484296. The cubic root of 30814261 is about 313.5094135060.

The spelling of 30814261 in words is "thirty million, eight hundred fourteen thousand, two hundred sixty-one".