331469 has 4 divisors (see below), whose sum is σ = 334620. Its totient is φ = 328320.

The previous prime is 331451. The next prime is 331489. The reversal of 331469 is 964133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 289444 + 42025 = 538^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 331469 - 2⁸ = 331213 is a prime.

It is a super-2 number, since 2×331469² = 219743395922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1412 + ... + 1629.

It is an arithmetic number, because the mean of its divisors is an integer number (83655).

2³³¹⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

331469 is a deficient number, since it is larger than the sum of its proper divisors (3151).

331469 is a wasteful number, since it uses less digits than its factorization.

331469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150.

The product of its digits is 1944, while the sum is 26.

The square root of 331469 is about 575.7334452679. The cubic root of 331469 is about 69.2066200356.

The spelling of 331469 in words is "three hundred thirty-one thousand, four hundred sixty-nine".