337981 has 8 divisors (see below), whose sum is σ = 393984. Its totient is φ = 283920.

The previous prime is 337973. The next prime is 337999. The reversal of 337981 is 189733.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 337981 - 2³ = 337973 is a prime.

It is a super-2 number, since 2×337981² = 228462312722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (337901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85 + ... + 826.

It is an arithmetic number, because the mean of its divisors is an integer number (49248).

2³³⁷⁹⁸¹ is an apocalyptic number.

It is an amenable number.

337981 is a deficient number, since it is larger than the sum of its proper divisors (56003).

337981 is an equidigital number, since it uses as much as digits as its factorization.

337981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971.

The product of its digits is 4536, while the sum is 31.

The square root of 337981 is about 581.3613334235. The cubic root of 337981 is about 69.6568924219.

The spelling of 337981 in words is "three hundred thirty-seven thousand, nine hundred eighty-one".