9813123 has 16 divisors (see below), whose sum is σ = 14745600. Its totient is φ = 6448680.

The previous prime is 9813061. The next prime is 9813127. The reversal of 9813123 is 3213189.

9813123 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9813123 - 2⁸ = 9812867 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (9813127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 643 + ... + 4476.

It is an arithmetic number, because the mean of its divisors is an integer number (921600).

Almost surely, 2^9813123 is an apocalyptic number.

9813123 is a deficient number, since it is larger than the sum of its proper divisors (4932477).

9813123 is a wasteful number, since it uses less digits than its factorization.

9813123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5199 (or 5193 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 9813123 is about 3132.5904615829. The cubic root of 9813123 is about 214.0929735472.

The spelling of 9813123 in words is "nine million, eight hundred thirteen thousand, one hundred twenty-three".