9801023 has 4 divisors (see below), whose sum is σ = 9808368. Its totient is φ = 9793680.

The previous prime is 9801019. The next prime is 9801031. The reversal of 9801023 is 3201089.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3201089 = 307 ⋅10427.

It is a cyclic number.

It is not a de Polignac number, because 9801023 - 2² = 9801019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9801023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9801083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043 + ... + 4548.

It is an arithmetic number, because the mean of its divisors is an integer number (2452092).

Almost surely, 2^9801023 is an apocalyptic number.

9801023 is a deficient number, since it is larger than the sum of its proper divisors (7345).

9801023 is a wasteful number, since it uses less digits than its factorization.

9801023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7344.

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

The square root of 9801023 is about 3130.6585569174. The cubic root of 9801023 is about 214.0049420933.

The spelling of 9801023 in words is "nine million, eight hundred one thousand, twenty-three".