20231004 has 12 divisors (see below), whose sum is σ = 47205704. Its totient is φ = 6743664.

The previous prime is 20230997. The next prime is 20231011. The reversal of 20231004 is 40013202.

It is an interprime number because it is at equal distance from previous prime (20230997) and next prime (20231011).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1685917 = 20231004 / (2 + 0 + 2 + 3 + 1 + 0 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 842947 + ... + 842970.

Almost surely, 2^20231004 is an apocalyptic number.

It is an amenable number.

20231004 is an abundant number, since it is smaller than the sum of its proper divisors (26974700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20231004 is a wasteful number, since it uses less digits than its factorization.

20231004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685924 (or 1685922 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20231004 is about 4497.8888381106. Note that the first 4 decimals coincide. The cubic root of 20231004 is about 272.4828325745.

Adding to 20231004 its reverse (40013202), we get a palindrome (60244206).

The spelling of 20231004 in words is "twenty million, two hundred thirty-one thousand, four".