10001023 has 4 divisors (see below), whose sum is σ = 10150360. Its totient is φ = 9851688.

The previous prime is 10001009. The next prime is 10001053. The reversal of 10001023 is 32010001.

10001023 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10001023 - 2⁹ = 10000511 is a prime.

It is a super-2 number, since 2×10001023² = 200040922093058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10000997 and 10001015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001053) 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, 74568 + ... + 74701.

It is an arithmetic number, because the mean of its divisors is an integer number (2537590).

Almost surely, 2^10001023 is an apocalyptic number.

10001023 is a deficient number, since it is larger than the sum of its proper divisors (149337).

10001023 is an equidigital number, since it uses as much as digits as its factorization.

10001023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149336.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 10001023 is about 3162.4394065341. The cubic root of 10001023 is about 215.4508153750.

Adding to 10001023 its reverse (32010001), we get a palindrome (42011024).

The spelling of 10001023 in words is "ten million, one thousand, twenty-three".