30119891 has 2 divisors, whose sum is σ = 30119892. Its totient is φ = 30119890.

The previous prime is 30119863. The next prime is 30119897. The reversal of 30119891 is 19891103.

It is a strong prime.

It is an emirp because it is prime and its reverse (19891103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30119891 - 2⁶ = 30119827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30119897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15059945 + 15059946.

It is an arithmetic number, because the mean of its divisors is an integer number (15059946).

Almost surely, 2^30119891 is an apocalyptic number.

30119891 is a deficient number, since it is larger than the sum of its proper divisors (1).

30119891 is an equidigital number, since it uses as much as digits as its factorization.

30119891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 30119891 is about 5488.1591631439. The cubic root of 30119891 is about 311.1366217696.

The spelling of 30119891 in words is "thirty million, one hundred nineteen thousand, eight hundred ninety-one".