481309 has 4 divisors (see below), whose sum is σ = 488160. Its totient is φ = 474460.

The previous prime is 481307. The next prime is 481343. The reversal of 481309 is 903184.

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.

It is a cyclic number.

It is not a de Polignac number, because 481309 - 2¹ = 481307 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 (481301) 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, 3319 + ... + 3460.

It is an arithmetic number, because the mean of its divisors is an integer number (122040).

2⁴⁸¹³⁰⁹ is an apocalyptic number.

It is an amenable number.

481309 is a deficient number, since it is larger than the sum of its proper divisors (6851).

481309 is an equidigital number, since it uses as much as digits as its factorization.

481309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6850.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 481309 is about 693.7643692206. The cubic root of 481309 is about 78.3684626903.

Subtracting 481309 from its reverse (903184), we obtain a cube (421875 = 75³).

The spelling of 481309 in words is "four hundred eighty-one thousand, three hundred nine".