30331061 has 2 divisors, whose sum is σ = 30331062. Its totient is φ = 30331060.

The previous prime is 30331033. The next prime is 30331069. The reversal of 30331061 is 16013303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29268100 + 1062961 = 5410^2 + 1031^2 .

It is a cyclic number.

It is not a de Polignac number, because 30331061 - 2²² = 26136757 is a prime.

It is a super-2 number, since 2×30331061² = 1839946522771442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30331069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15165530 + 15165531.

It is an arithmetic number, because the mean of its divisors is an integer number (15165531).

Almost surely, 2^30331061 is an apocalyptic number.

It is an amenable number.

30331061 is a deficient number, since it is larger than the sum of its proper divisors (1).

30331061 is an equidigital number, since it uses as much as digits as its factorization.

30331061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 30331061 is about 5507.3642516180. The cubic root of 30331061 is about 311.8620534436.

Adding to 30331061 its reverse (16013303), we get a palindrome (46344364).

The spelling of 30331061 in words is "thirty million, three hundred thirty-one thousand, sixty-one".