30705011 has 4 divisors (see below), whose sum is σ = 30861072. Its totient is φ = 30548952.

The previous prime is 30704983. The next prime is 30705013. The reversal of 30705011 is 11050703.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30705011 - 2²² = 26510707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30705013) 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 in 3 ways as a sum of consecutive naturals, for example, 77735 + ... + 78128.

It is an arithmetic number, because the mean of its divisors is an integer number (7715268).

Almost surely, 2^30705011 is an apocalyptic number.

30705011 is a deficient number, since it is larger than the sum of its proper divisors (156061).

30705011 is a wasteful number, since it uses less digits than its factorization.

30705011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156060.

The product of its (nonzero) digits is 105, while the sum is 17.

The square root of 30705011 is about 5541.2102468685. The cubic root of 30705011 is about 313.1384655492.

Adding to 30705011 its reverse (11050703), we get a palindrome (41755714).

The spelling of 30705011 in words is "thirty million, seven hundred five thousand, eleven".