30001331 has 2 divisors, whose sum is σ = 30001332. Its totient is φ = 30001330.

The previous prime is 30001303. The next prime is 30001333. The reversal of 30001331 is 13310003.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30001331 - 2⁶ = 30001267 is a prime.

It is a super-2 number, since 2×30001331² = 1800159723543122, which contains 22 as substring.

Together with 30001333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30001333) 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, 15000665 + 15000666.

It is an arithmetic number, because the mean of its divisors is an integer number (15000666).

Almost surely, 2^30001331 is an apocalyptic number.

30001331 is a deficient number, since it is larger than the sum of its proper divisors (1).

30001331 is an equidigital number, since it uses as much as digits as its factorization.

30001331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27, while the sum is 11.

The square root of 30001331 is about 5477.3470768247. The cubic root of 30001331 is about 310.7278457791.

Adding to 30001331 its reverse (13310003), we get a palindrome (43311334).

The spelling of 30001331 in words is "thirty million, one thousand, three hundred thirty-one".