104213131020 has 144 divisors (see below), whose sum is σ = 323098513920. Its totient is φ = 27177026688.

The previous prime is 104213130997. The next prime is 104213131037. The reversal of 104213131020 is 20131312401.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 104213130984 and 104213131002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12338919 + ... + 12347361.

It is an arithmetic number, because the mean of its divisors is an integer number (2243739680).

Almost surely, 2^104213131020 is an apocalyptic number.

104213131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 104213131020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161549256960).

104213131020 is an abundant number, since it is smaller than the sum of its proper divisors (218885382900).

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

104213131020 is a wasteful number, since it uses less digits than its factorization.

104213131020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9964 (or 9959 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 104213131020 its reverse (20131312401), we get a palindrome (124344443421).

The spelling of 104213131020 in words is "one hundred four billion, two hundred thirteen million, one hundred thirty-one thousand, twenty".