30542263 has 2 divisors, whose sum is σ = 30542264. Its totient is φ = 30542262.

The previous prime is 30542261. The next prime is 30542311. The reversal of 30542263 is 36224503.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30542263 - 2¹ = 30542261 is a prime.

It is a super-2 number, since 2×30542263² = 1865659658322338, which contains 22 as substring.

Together with 30542261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30542261) 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, 15271131 + 15271132.

It is an arithmetic number, because the mean of its divisors is an integer number (15271132).

Almost surely, 2^30542263 is an apocalyptic number.

30542263 is a deficient number, since it is larger than the sum of its proper divisors (1).

30542263 is an equidigital number, since it uses as much as digits as its factorization.

30542263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 30542263 is about 5526.5054962426. The cubic root of 30542263 is about 312.5842349989.

Adding to 30542263 its reverse (36224503), we get a palindrome (66766766).

The spelling of 30542263 in words is "thirty million, five hundred forty-two thousand, two hundred sixty-three".