20131023104 has 36 divisors (see below), whose sum is σ = 41117929776. Its totient is φ = 9831424512.

The previous prime is 20131023103. The next prime is 20131023109. The reversal of 20131023104 is 40132013102.

It is not an unprimeable number, because it can be changed into a prime (20131023103) 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, 903374 + ... + 925389.

It is an arithmetic number, because the mean of its divisors is an integer number (1142164716).

Almost surely, 2^20131023104 is an apocalyptic number.

It is an amenable number.

20131023104 is an abundant number, since it is smaller than the sum of its proper divisors (20986906672).

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

20131023104 is an equidigital number, since it uses as much as digits as its factorization.

20131023104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828822 (or 1828808 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20131023104 its reverse (40132013102), we get a palindrome (60263036206).

The spelling of 20131023104 in words is "twenty billion, one hundred thirty-one million, twenty-three thousand, one hundred four".