30740291 has 2 divisors, whose sum is σ = 30740292. Its totient is φ = 30740290.

The previous prime is 30740263. The next prime is 30740293. The reversal of 30740291 is 19204703.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30740291 is a prime.

Together with 30740293, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30740291.

It is not a weakly prime, because it can be changed into another prime (30740293) 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, 15370145 + 15370146.

It is an arithmetic number, because the mean of its divisors is an integer number (15370146).

Almost surely, 2^30740291 is an apocalyptic number.

30740291 is a deficient number, since it is larger than the sum of its proper divisors (1).

30740291 is an equidigital number, since it uses as much as digits as its factorization.

30740291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 30740291 is about 5544.3927530434. The cubic root of 30740291 is about 313.2583514811.

Adding to 30740291 its reverse (19204703), we get a palindrome (49944994).

The spelling of 30740291 in words is "thirty million, seven hundred forty thousand, two hundred ninety-one".