Properties of the Number 346

Three Hundred Forty-Six

Basics

Value: 345 → 346 → 347

Parity: even

Prime: No

Previous Prime: 337

Next Prime: 347

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 173

Divisors: 1, 2, 173, 346

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101011010

Octal: 532

Duodecimal: 24A

Hexadecimal: 15a

Square: 119716

Square Root: 18.601075237738275

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 primes doubled; even semiprimes. A100484

The Franel number a(n) = ∑_{k = 0..n} binomial(n,k)³. A172

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

Infinite sequence starting with a(0)=0 such that A049820(a(k)) = a(k-1) for all k>=1, where A049820(n) = n - (number of divisors of n). A259934

a(0) = 1, a(n) = sum of digits of all previous terms. A4207

Triangle read by rows. Convolution triangle of the prime indicator sequence A089026. A357368

Number of integer partitions of n such that it is possible to choose a different prime factor of each part. A370592

Positions of letter c in the tribonacci word abacabaabacababac... generated by a->ab, b->ac, c->a (cf. A092782). A3146

Numbers k for which 10k+1, 10k+3, 10k+7 and 10k+9 are primes. A7811

Numbers k with A033676(k)=2, where A033676 is the largest divisor <= sqrt(k). A161344