981373 has 2 divisors, whose sum is σ = 981374. Its totient is φ = 981372.

The previous prime is 981319. The next prime is 981377. The reversal of 981373 is 373189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636804 + 344569 = 798^2 + 587^2 .

981373 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 981373 - 2¹⁷ = 850301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490686 + 490687.

It is an arithmetic number, because the mean of its divisors is an integer number (490687).

2⁹⁸¹³⁷³ is an apocalyptic number.

It is an amenable number.

981373 is a deficient number, since it is larger than the sum of its proper divisors (1).

981373 is an equidigital number, since it uses as much as digits as its factorization.

981373 is an odious number, because the sum of its binary digits is odd.

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

The square root of 981373 is about 990.6427206617. The cubic root of 981373 is about 99.3752044351.

The spelling of 981373 in words is "nine hundred eighty-one thousand, three hundred seventy-three".