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Properties of the Number -102831

One Hundred Two Thousand Eight Hundred Thirty-One

Basics

Value: -102832 → -102831 → -102830

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 151 × 227

Divisors: 1, 3, 151, 227, 453, 681, 34277, 102831

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11001000110101111

Octal: -310657

Duodecimal: -4B613

Hexadecimal: -191af

Square: 10574214561

Square Root: 320.67273036539916

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

The first of two consecutive triangular numbers the sum of which is equal to the sum of two consecutive prime numbers. A298462
Strong pseudoprimes to base 19. A20245
Hexagonal numbers for which both the sum of the digits and the product of the digits are also hexagonal numbers. A117064
Number of n X 2 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 3 binary array having a sum of one or less, with rows and columns of the latter in lexicographically nondecreasing order. A227161
Hexagonal numbers that are sphenic numbers. A380007
a(1) = 0, then smallest triangular number such that a(n+1)- a(n) is a palindrome. A75057
a(n) = m*(m+1)/2, where m = floor(n3/2). A185541
Concatenation of triangular number k and its 10's complement is prime. A108970
Triangular numbers T such that T+10 is the next prime after T. A129540
Triangular numbers that are the sum of two distinct nonzero triangular numbers in exactly two ways. A350368