30840353 has 2 divisors, whose sum is σ = 30840354. Its totient is φ = 30840352.

The previous prime is 30840343. The next prime is 30840361. The reversal of 30840353 is 35304803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28815424 + 2024929 = 5368^2 + 1423^2 .

It is a cyclic number.

It is not a de Polignac number, because 30840353 - 2¹⁰ = 30839329 is a prime.

It is a super-2 number, since 2×30840353² = 1902254746329218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30840343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15420176 + 15420177.

It is an arithmetic number, because the mean of its divisors is an integer number (15420177).

Almost surely, 2^30840353 is an apocalyptic number.

It is an amenable number.

30840353 is a deficient number, since it is larger than the sum of its proper divisors (1).

30840353 is an equidigital number, since it uses as much as digits as its factorization.

30840353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 30840353 is about 5553.4091331361. The cubic root of 30840353 is about 313.5978766570.

The spelling of 30840353 in words is "thirty million, eight hundred forty thousand, three hundred fifty-three".