Properties of the Number 1111

One Thousand One Hundred Eleven

Basics

Value: 1110 → 1111 → 1112

Parity: odd

Prime: No

Previous Prime: 1109

Next Prime: 1117

Digit Sum: 4

Digital Root: 4

Palindrome: Yes

Factorization: 11 × 101

Divisors: 1, 11, 101, 1111

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 10001010111

Octal: 2127

Duodecimal: 787

Hexadecimal: 457

Square: 1234321

Square Root: 33.331666624997915

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

Repunits: (10ⁿ - 1)/9. Often denoted by R_n. A2275

The binary numbers (or binary words, or binary vectors, or binary expansion of n): numbers written in base 2. A7088

Numbers in base 3. A7089

Integers written in factorial base. A7623

Repdigit numbers, or numbers whose digits are all equal. A10785

n written in primorial base. A49345

Unary representation of natural numbers. A42

Smith (or joke) numbers: composite numbers k such that sum of digits of k = sum of digits of prime factors of k (counted with multiplicity). A6753

Numbers that contain only 1's and 2's. Nonempty binary strings of length n in lexicographic order. A7931

Numbers that are divisible by the product of their digits. A7602