30134891 has 2 divisors, whose sum is σ = 30134892. Its totient is φ = 30134890.

The previous prime is 30134879. The next prime is 30134917. The reversal of 30134891 is 19843103.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30134891 is a prime.

It is a super-2 number, since 2×30134891² = 1816223311163762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30134831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15067445 + 15067446.

It is an arithmetic number, because the mean of its divisors is an integer number (15067446).

Almost surely, 2^30134891 is an apocalyptic number.

30134891 is a deficient number, since it is larger than the sum of its proper divisors (1).

30134891 is an equidigital number, since it uses as much as digits as its factorization.

30134891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 30134891 is about 5489.5255714861. The cubic root of 30134891 is about 311.1882628905.

Adding to 30134891 its reverse (19843103), we get a palindrome (49977994).

The spelling of 30134891 in words is "thirty million, one hundred thirty-four thousand, eight hundred ninety-one".