Search a number
-
+
131020012032 = 2937134321799
BaseRepresentation
bin111101000000101100…
…1101011101000000000
3110112012000021020002020
41322001121223220000
54121312110341112
6140104553321440
712315540504240
oct1720131535000
9415160236066
10131020012032
1150624421288
1221486406280
13c4802ca750
1464acb45b20
15361c69948c
hex1e8166ba00

131020012032 has 320 divisors, whose sum is σ = 439605196800. Its totient is φ = 33749581824.

The previous prime is 131020012007. The next prime is 131020012037. The reversal of 131020012032 is 230210020131.

It is not an unprimeable number, because it can be changed into a prime (131020012037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5999469 + ... + 6021267.

It is an arithmetic number, because the mean of its divisors is an integer number (1373766240).

Almost surely, 2131020012032 is an apocalyptic number.

131020012032 is a gapful number since it is divisible by the number (12) 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 131020012032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219802598400).

131020012032 is an abundant number, since it is smaller than the sum of its proper divisors (308585184768).

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

131020012032 is a wasteful number, since it uses less digits than its factorization.

131020012032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21883 (or 21867 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 131020012032 its reverse (230210020131), we get a palindrome (361230032163).

The spelling of 131020012032 in words is "one hundred thirty-one billion, twenty million, twelve thousand, thirty-two".