308013 has 8 divisors (see below), whose sum is σ = 415968. Its totient is φ = 202704.

The previous prime is 308003. The next prime is 308017. The reversal of 308013 is 310803.

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

It is not a de Polignac number, because 308013 - 2¹² = 303917 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 307983 and 308001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370 + ... + 867.

It is an arithmetic number, because the mean of its divisors is an integer number (51996).

2³⁰⁸⁰¹³ is an apocalyptic number.

It is an amenable number.

308013 is a deficient number, since it is larger than the sum of its proper divisors (107955).

308013 is a wasteful number, since it uses less digits than its factorization.

308013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 308013 is about 554.9891890839. The cubic root of 308013 is about 67.5340842951.

Adding to 308013 its reverse (310803), we get a palindrome (618816).

The spelling of 308013 in words is "three hundred eight thousand, thirteen".