336981 has 4 divisors (see below), whose sum is σ = 449312. Its totient is φ = 224652.

The previous prime is 336977. The next prime is 336983. The reversal of 336981 is 189633.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 189633 = 3 ⋅63211.

It is not a de Polignac number, because 336981 - 2² = 336977 is a prime.

It is a super-2 number, since 2×336981² = 227112388722, which contains 22 as substring.

It is a D-number.

It is the 581-st Hogben number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 336981.

It is not an unprimeable number, because it can be changed into a prime (336983) by changing a digit.

It is a nontrivial repunit in base 580.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56161 + ... + 56166.

It is an arithmetic number, because the mean of its divisors is an integer number (112328).

2³³⁶⁹⁸¹ is an apocalyptic number.

It is an amenable number.

336981 is a deficient number, since it is larger than the sum of its proper divisors (112331).

336981 is a wasteful number, since it uses less digits than its factorization.

336981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112330.

The product of its digits is 3888, while the sum is 30.

The square root of 336981 is about 580.5006459945. The cubic root of 336981 is about 69.5881255340.

The spelling of 336981 in words is "three hundred thirty-six thousand, nine hundred eighty-one".