981023 has 2 divisors, whose sum is σ = 981024. Its totient is φ = 981022.

The previous prime is 981017. The next prime is 981037. The reversal of 981023 is 320189.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 981023 - 2¹⁶ = 915487 is a prime.

It is a super-2 number, since 2×981023² = 1924812253058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 981023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981073) 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 as a sum of consecutive naturals, namely, 490511 + 490512.

It is an arithmetic number, because the mean of its divisors is an integer number (490512).

2⁹⁸¹⁰²³ is an apocalyptic number.

981023 is a deficient number, since it is larger than the sum of its proper divisors (1).

981023 is an equidigital number, since it uses as much as digits as its factorization.

981023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 981023 is about 990.4660519170. The cubic root of 981023 is about 99.3633892003.

The spelling of 981023 in words is "nine hundred eighty-one thousand, twenty-three".