308313394 has 8 divisors (see below), whose sum is σ = 489674268. Its totient is φ = 145088640.

The previous prime is 308313389. The next prime is 308313403. The reversal of 308313394 is 493313803.

It can be written as a sum of positive squares in 2 ways, for example, as 262926225 + 45387169 = 16215^2 + 6737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 9068041 = 308313394 / (3 + 0 + 8 + 3 + 1 + 3 + 3 + 9 + 4).

It is an unprimeable number.

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, 4533987 + ... + 4534054.

Almost surely, 2^308313394 is an apocalyptic number.

308313394 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

308313394 is a deficient number, since it is larger than the sum of its proper divisors (181360874).

308313394 is a wasteful number, since it uses less digits than its factorization.

308313394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9068060.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 308313394 is about 17558.8551449119. The cubic root of 308313394 is about 675.5603168288.

It can be divided in two parts, 30831 and 3394, that added together give a square (34225 = 185²).

The spelling of 308313394 in words is "three hundred eight million, three hundred thirteen thousand, three hundred ninety-four".