308040105 has 16 divisors (see below), whose sum is σ = 493732224. Its totient is φ = 163998720.

The previous prime is 308040091. The next prime is 308040107. The reversal of 308040105 is 501040803.

It is not a de Polignac number, because 308040105 - 2⁶ = 308040041 is a prime.

It is a super-2 number, since 2×308040105² = 189777412576822050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (308040107) 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 15 ways as a sum of consecutive naturals, for example, 9141 + ... + 26450.

It is an arithmetic number, because the mean of its divisors is an integer number (30858264).

Almost surely, 2^308040105 is an apocalyptic number.

It is an amenable number.

308040105 is a deficient number, since it is larger than the sum of its proper divisors (185692119).

308040105 is a wasteful number, since it uses less digits than its factorization.

308040105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36176.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 308040105 is about 17551.0713348217. The cubic root of 308040105 is about 675.3606522624.

Adding to 308040105 its reverse (501040803), we get a palindrome (809080908).

The spelling of 308040105 in words is "three hundred eight million, forty thousand, one hundred five".