Properties of the Number 1341

One Thousand Three Hundred Forty-One

Basics

Value: 1340 → 1341 → 1342

Parity: odd

Prime: No

Previous Prime: 1327

Next Prime: 1361

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 149

Divisors: 1, 3, 9, 149, 447, 1341

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10100111101

Octal: 2475

Duodecimal: 939

Hexadecimal: 53d

Square: 1798281

Square Root: 36.61966684720111

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Odd numbers of the form p^1+4k * r², where p is prime of the form 1+4m, r > 1, and gcd(p,r) = 1. (Euler's criteria for odd perfect numbers). A228058

Partial sums of A299289. A299290

Number of balls in pyramid with base either a regular hexagon or a hexagon with alternate sides differing by 1 (balls in hexagonal pyramid of height n taken from hexagonal close-packing). A19298

Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n and height k (1 <= k <= n). A80936

Mountain numbers. A134941

a(n) = Fibonacci(n+1) - 2^floor(n/2). A5672

Numbers that are the sum of 3 nonzero squares in 10 or more ways. A25338

Smallest number at distance 2n from nearest prime. A51728

Expansion of (1-x)/(1-x-2·x²+x³). A52547

Number of Catalan paths (nonnegative, starting and ending at 0, step +/-1) of 2·n steps with all values <= 5. A80937