104000031520 has 192 divisors, whose sum is σ = 309772512000. Its totient is φ = 32051036160.

The previous prime is 104000031517. The next prime is 104000031671. The reversal of 104000031520 is 25130000401.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 104000031494 and 104000031503.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1049056 + ... + 1143904.

It is an arithmetic number, because the mean of its divisors is an integer number (1613398500).

Almost surely, 2^104000031520 is an apocalyptic number.

104000031520 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 104000031520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154886256000).

104000031520 is an abundant number, since it is smaller than the sum of its proper divisors (205772480480).

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

104000031520 is a wasteful number, since it uses less digits than its factorization.

104000031520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94971 (or 94963 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

Adding to 104000031520 its reverse (25130000401), we get a palindrome (129130031921).

The spelling of 104000031520 in words is "one hundred four billion, thirty-one thousand, five hundred twenty".