981337 has 4 divisors (see below), whose sum is σ = 1121536. Its totient is φ = 841140.

The previous prime is 981319. The next prime is 981373. The reversal of 981337 is 733189.

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.

It is a cyclic number.

It is not a de Polignac number, because 981337 - 2⁷ = 981209 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 981299 and 981308.

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 981337.

It is not an unprimeable number, because it can be changed into a prime (981377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70089 + ... + 70102.

It is an arithmetic number, because the mean of its divisors is an integer number (280384).

2⁹⁸¹³³⁷ is an apocalyptic number.

It is an amenable number.

981337 is a deficient number, since it is larger than the sum of its proper divisors (140199).

981337 is a wasteful number, since it uses less digits than its factorization.

981337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140198.

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

The square root of 981337 is about 990.6245504731. The cubic root of 981337 is about 99.3739892834.

The spelling of 981337 in words is "nine hundred eighty-one thousand, three hundred thirty-seven".