308913029 has 2 divisors, whose sum is σ = 308913030. Its totient is φ = 308913028.

The previous prime is 308913019. The next prime is 308913049. The reversal of 308913029 is 920319803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159340129 + 149572900 = 12623^2 + 12230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-308913029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 308913029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (308913019) 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, 154456514 + 154456515.

It is an arithmetic number, because the mean of its divisors is an integer number (154456515).

Almost surely, 2^308913029 is an apocalyptic number.

It is an amenable number.

308913029 is a deficient number, since it is larger than the sum of its proper divisors (1).

308913029 is an equidigital number, since it uses as much as digits as its factorization.

308913029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 308913029 is about 17575.9218534904. The cubic root of 308913029 is about 675.9979962419.

The spelling of 308913029 in words is "three hundred eight million, nine hundred thirteen thousand, twenty-nine".