308484813 has 32 divisors (see below), whose sum is σ = 522575872. Its totient is φ = 157464000.

The previous prime is 308484797. The next prime is 308484821. The reversal of 308484813 is 318484803.

It is not a de Polignac number, because 308484813 - 2⁴ = 308484797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308484823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9763 + ... + 26688.

It is an arithmetic number, because the mean of its divisors is an integer number (16330496).

Almost surely, 2^308484813 is an apocalyptic number.

It is an amenable number.

308484813 is a deficient number, since it is larger than the sum of its proper divisors (214091059).

308484813 is a wasteful number, since it uses less digits than its factorization.

308484813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36505.

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 308484813 is about 17563.7357358849. The cubic root of 308484813 is about 675.6854951061.

The spelling of 308484813 in words is "three hundred eight million, four hundred eighty-four thousand, eight hundred thirteen".