331479 has 8 divisors (see below), whose sum is σ = 491120. Its totient is φ = 220968.

The previous prime is 331451. The next prime is 331489. The reversal of 331479 is 974133.

It is not a de Polignac number, because 331479 - 2⁵ = 331447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 12277 = 331479 / (3 + 3 + 1 + 4 + 7 + 9).

It is a Duffinian number.

331479 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331489) 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 7 ways as a sum of consecutive naturals, for example, 6112 + ... + 6165.

It is an arithmetic number, because the mean of its divisors is an integer number (61390).

2³³¹⁴⁷⁹ is an apocalyptic number.

331479 is a deficient number, since it is larger than the sum of its proper divisors (159641).

331479 is a wasteful number, since it uses less digits than its factorization.

331479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12286 (or 12280 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 331479 is about 575.7421297769. The cubic root of 331479 is about 69.2073159873.

The spelling of 331479 in words is "three hundred thirty-one thousand, four hundred seventy-nine".