331969 has 8 divisors (see below), whose sum is σ = 366912. Its totient is φ = 297840.

The previous prime is 331967. The next prime is 331973. The reversal of 331969 is 969133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331969 - 2¹ = 331967 is a prime.

It is a super-2 number, since 2×331969² = 220406833922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331969.

It is not an unprimeable number, because it can be changed into a prime (331967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 987 + ... + 1279.

It is an arithmetic number, because the mean of its divisors is an integer number (45864).

2³³¹⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

331969 is a deficient number, since it is larger than the sum of its proper divisors (34943).

331969 is a wasteful number, since it uses less digits than its factorization.

331969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407.

The product of its digits is 4374, while the sum is 31.

The square root of 331969 is about 576.1675103648. The cubic root of 331969 is about 69.2414004883.

It can be divided in two parts, 33 and 1969, that added together give a palindrome (2002).

The spelling of 331969 in words is "three hundred thirty-one thousand, nine hundred sixty-nine".