Properties of the Number -203203

Two Hundred Three Thousand Two Hundred Three

Basics

Value: -203204 → -203203 → -203202

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 7 ² × 11 × 13 × 29

Divisors: 1, 7, 11, 13, 29, 49, 77, 91, 143, 203

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110001100111000011

Octal: -614703

Duodecimal: -99717

Hexadecimal: -319c3

Square: 41291459209

Square Root: 450.78043435801425

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

a(n) = larger member of n-th pair of distinct, positive, triangular numbers whose sum and difference are also triangular numbers. A185128

Triangular numbers containing 2n digits obtained by duplicating the first n digits; i.e., triangular numbers in A020338. A68899

Positions of 3's in A347381. A347393

Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 2,0,3. A37624

Triangular numbers containing 2k digits in which the sum of the first k digits = that of the rest. A68898

Triangular numbers n such that each decimal digit of n is equal to the difference of at least two other digits of n. A255917

Triangular numbers composed of digits {0,2,3}. A119049

Triangular numbers in which the sum of the external digits equals the sum of the internal digits. A88289

First of three consecutive triangular numbers that add up to a perfect square. A319588

Odd numbers k such that k/(1+A347381(k)) obtains record values, where A347381 gives the distance from n to the nearest common ancestor of n and σ(n) in the Doudna-tree. A386423