308312 has 16 divisors (see below), whose sum is σ = 612360. Its totient is φ = 145024.

The previous prime is 308311. The next prime is 308317. The reversal of 308312 is 213803.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998 + ... + 1269.

2³⁰⁸³¹² is an apocalyptic number.

It is an amenable number.

308312 is a deficient number, since it is larger than the sum of its proper divisors (304048).

308312 is a wasteful number, since it uses less digits than its factorization.

308312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290 (or 2286 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 308312 is about 555.2584983591. The cubic root of 308312 is about 67.5559298674. Note that the first 3 decimals are identical.

The spelling of 308312 in words is "three hundred eight thousand, three hundred twelve".