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331669 = 1331823
BaseRepresentation
bin1010000111110010101
3121211222001
41100332111
541103134
611035301
72550652
oct1207625
9554861
10331669
11207208
1213bb31
13b7c70
1488c29
1568414
hex50f95

331669 has 8 divisors (see below), whose sum is σ = 369152. Its totient is φ = 295920.

The previous prime is 331663. The next prime is 331691. The reversal of 331669 is 966133.

331669 is nontrivially palindromic in base 12.

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 331669 - 217 = 200597 is a prime.

It is a super-2 number, since 2×3316692 = 220008651122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331663) 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, 9 + ... + 814.

It is an arithmetic number, because the mean of its divisors is an integer number (46144).

2331669 is an apocalyptic number.

331669 is the 333-rd hex number.

It is an amenable number.

331669 is a deficient number, since it is larger than the sum of its proper divisors (37483).

331669 is a wasteful number, since it uses less digits than its factorization.

331669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867.

The product of its digits is 2916, while the sum is 28.

The square root of 331669 is about 575.9071105656. The cubic root of 331669 is about 69.2205364110.

It can be divided in two parts, 331 and 669, that added together give a cube (1000 = 103).

The spelling of 331669 in words is "three hundred thirty-one thousand, six hundred sixty-nine".

Divisors: 1 13 31 403 823 10699 25513 331669