Search a number
-
+
131131044222 = 2321855174037
BaseRepresentation
bin111101000100000000…
…1001111000101111110
3110112110202012020121120
41322020001033011332
54122024021403342
6140124001211410
712321356325243
oct1721001170576
9415422166546
10131131044222
1150681068422
12214b7630b66
13c49a304879
1464bd7a95ca
1536272ccaec
hex1e8804f17e

131131044222 has 8 divisors (see below), whose sum is σ = 262262088456. Its totient is φ = 43710348072.

The previous prime is 131131044221. The next prime is 131131044241. The reversal of 131131044222 is 222440131131.

It is a sphenic number, since it is the product of 3 distinct primes.

131131044222 is an admirable number.

It is a super-4 number, since 4×1311310442224 (a number of 46 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131131044192 and 131131044201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131131044221) 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, 10927587013 + ... + 10927587024.

It is an arithmetic number, because the mean of its divisors is an integer number (32782761057).

Almost surely, 2131131044222 is an apocalyptic number.

131131044222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131131044222 is a wasteful number, since it uses less digits than its factorization.

131131044222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21855174042.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 131131044222 its reverse (222440131131), we get a palindrome (353571175353).

The spelling of 131131044222 in words is "one hundred thirty-one billion, one hundred thirty-one million, forty-four thousand, two hundred twenty-two".

Divisors: 1 2 3 6 21855174037 43710348074 65565522111 131131044222