30733919 has 2 divisors, whose sum is σ = 30733920. Its totient is φ = 30733918.

The previous prime is 30733897. The next prime is 30733921. The reversal of 30733919 is 91933703.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (91933703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30733919 - 2²⁰ = 29685343 is a prime.

It is a super-2 number, since 2×30733919² = 1889147554197122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 30733921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30733979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15366959 + 15366960.

It is an arithmetic number, because the mean of its divisors is an integer number (15366960).

Almost surely, 2^30733919 is an apocalyptic number.

30733919 is a deficient number, since it is larger than the sum of its proper divisors (1).

30733919 is an equidigital number, since it uses as much as digits as its factorization.

30733919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309, while the sum is 35.

The square root of 30733919 is about 5543.8180886461. The cubic root of 30733919 is about 313.2367054037.

The spelling of 30733919 in words is "thirty million, seven hundred thirty-three thousand, nine hundred nineteen".