308469312 has 84 divisors (see below), whose sum is σ = 893448556. Its totient is φ = 101744640.

The previous prime is 308469263. The next prime is 308469323. The reversal of 308469312 is 213964803.

It can be written as a sum of positive squares in 2 ways, for example, as 112021056 + 196448256 = 10584^2 + 14016^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53112 + ... + 58632.

Almost surely, 2^308469312 is an apocalyptic number.

308469312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308469312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446724278).

308469312 is an abundant number, since it is smaller than the sum of its proper divisors (584979244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

308469312 is a wasteful number, since it uses less digits than its factorization.

308469312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5636 (or 5623 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 308469312 is about 17563.2944517821. The cubic root of 308469312 is about 675.6741774487.

The spelling of 308469312 in words is "three hundred eight million, four hundred sixty-nine thousand, three hundred twelve".