308413 has 4 divisors (see below), whose sum is σ = 352480. Its totient is φ = 264348.

The previous prime is 308411. The next prime is 308423. The reversal of 308413 is 314803.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 314803 = 43 ⋅7321.

It is not a de Polignac number, because 308413 - 2¹ = 308411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22023 + ... + 22036.

It is an arithmetic number, because the mean of its divisors is an integer number (88120).

2³⁰⁸⁴¹³ is an apocalyptic number.

It is an amenable number.

308413 is a deficient number, since it is larger than the sum of its proper divisors (44067).

308413 is an equidigital number, since it uses as much as digits as its factorization.

308413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44066.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 308413 is about 555.3494395423. The cubic root of 308413 is about 67.5633059496.

The spelling of 308413 in words is "three hundred eight thousand, four hundred thirteen".