308146109 has 2 divisors, whose sum is σ = 308146110. Its totient is φ = 308146108.

The previous prime is 308146103. The next prime is 308146133. The reversal of 308146109 is 901641803.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158206084 + 149940025 = 12578^2 + 12245^2 .

It is a cyclic number.

It is not a de Polignac number, because 308146109 - 2⁴ = 308146093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (308146103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154073054 + 154073055.

It is an arithmetic number, because the mean of its divisors is an integer number (154073055).

Almost surely, 2^308146109 is an apocalyptic number.

It is an amenable number.

308146109 is a deficient number, since it is larger than the sum of its proper divisors (1).

308146109 is an equidigital number, since it uses as much as digits as its factorization.

308146109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 308146109 is about 17554.0909476965. The cubic root of 308146109 is about 675.4381126525.

The spelling of 308146109 in words is "three hundred eight million, one hundred forty-six thousand, one hundred nine".