30033131 has 2 divisors, whose sum is σ = 30033132. Its totient is φ = 30033130.

The previous prime is 30033119. The next prime is 30033151. The reversal of 30033131 is 13133003.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30033131 is a prime.

It is a super-2 number, since 2×30033131² = 1803977915326322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30033151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15016565 + 15016566.

It is an arithmetic number, because the mean of its divisors is an integer number (15016566).

Almost surely, 2^30033131 is an apocalyptic number.

30033131 is a deficient number, since it is larger than the sum of its proper divisors (1).

30033131 is an equidigital number, since it uses as much as digits as its factorization.

30033131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 14.

The square root of 30033131 is about 5480.2491731672. The cubic root of 30033131 is about 310.8375926474.

Adding to 30033131 its reverse (13133003), we get a palindrome (43166134).

The spelling of 30033131 in words is "thirty million, thirty-three thousand, one hundred thirty-one".