20001231004 has 24 divisors (see below), whose sum is σ = 35302151808. Its totient is φ = 9915264240.

The previous prime is 20001230987. The next prime is 20001231073. The reversal of 20001231004 is 40013210002.

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 7 ways as a sum of consecutive naturals, for example, 176919 + ... + 267025.

It is an arithmetic number, because the mean of its divisors is an integer number (1470922992).

Almost surely, 2^20001231004 is an apocalyptic number.

It is an amenable number.

20001231004 is a deficient number, since it is larger than the sum of its proper divisors (15300920804).

20001231004 is a wasteful number, since it uses less digits than its factorization.

20001231004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90585 (or 90583 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20001231004 its reverse (40013210002), we get a palindrome (60014441006).

The spelling of 20001231004 in words is "twenty billion, one million, two hundred thirty-one thousand, four".