331069 has 4 divisors (see below), whose sum is σ = 332640. Its totient is φ = 329500.

The previous prime is 331063. The next prime is 331081. The reversal of 331069 is 960133.

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: 960133 = 71 ⋅13523.

It is a cyclic number.

It is not a de Polignac number, because 331069 - 2⁹ = 330557 is a prime.

It is a super-2 number, since 2×331069² = 219213365522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

331069 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331063) 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, 409 + ... + 910.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2³³¹⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

331069 is a deficient number, since it is larger than the sum of its proper divisors (1571).

331069 is a wasteful number, since it uses less digits than its factorization.

331069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 331069 is about 575.3859574234. The cubic root of 331069 is about 69.1787704822.

The spelling of 331069 in words is "three hundred thirty-one thousand, sixty-nine".