Search a number
-
+
130013231020 = 22527123987681
BaseRepresentation
bin111100100010101100…
…1000111011110101100
3110102120211211110011121
41321011121013132230
54112231341343040
6135421030430324
712251564141521
oct1710531073654
9412524743147
10130013231020
1150158096862
12212452023a4
13c34c857c3a
146415151148
1535ae0c8c4a
hex1e456477ac

130013231020 has 24 divisors (see below), whose sum is σ = 274035279168. Its totient is φ = 51813388800.

The previous prime is 130013231011. The next prime is 130013231021. The reversal of 130013231020 is 20132310031.

It is a junction number, because it is equal to n+sod(n) for n = 130013230985 and 130013231003.

It is not an unprimeable number, because it can be changed into a prime (130013231021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11988421 + ... + 11999260.

It is an arithmetic number, because the mean of its divisors is an integer number (11418136632).

Almost surely, 2130013231020 is an apocalyptic number.

130013231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130013231020 is an abundant number, since it is smaller than the sum of its proper divisors (144022048148).

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

130013231020 is a wasteful number, since it uses less digits than its factorization.

130013231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23987961 (or 23987959 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 130013231020 its reverse (20132310031), we get a palindrome (150145541051).

The spelling of 130013231020 in words is "one hundred thirty billion, thirteen million, two hundred thirty-one thousand, twenty".

Divisors: 1 2 4 5 10 20 271 542 1084 1355 2710 5420 23987681 47975362 95950724 119938405 239876810 479753620 6500661551 13001323102 26002646204 32503307755 65006615510 130013231020