Search a number
-
+
131224110211231 = 1743394317788201
BaseRepresentation
bin11101110101100011111110…
…011110011010000010011111
3122012121220100212100000211121
4131311203332132122002133
5114144433434203224411
61143031305104031411
736432425531626522
oct3565437636320237
9565556325300747
10131224110211231
11388a2918232924
1212874141002567
13582b4c3c4676b
1424593d0810bb9
151028690c95571
hex7758fe79a09f

131224110211231 has 8 divisors (see below), whose sum is σ = 138943503516384. Its totient is φ = 123504753350400.

The previous prime is 131224110211219. The next prime is 131224110211279. The reversal of 131224110211231 is 132112011422131.

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

It is not a de Polignac number, because 131224110211231 - 211 = 131224110209183 is a prime.

It is a super-2 number, since 2×1312241102112312 (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131224110211196 and 131224110211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131224110211211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1517070 + ... + 16271131.

It is an arithmetic number, because the mean of its divisors is an integer number (17367937939548).

Almost surely, 2131224110211231 is an apocalyptic number.

131224110211231 is a deficient number, since it is larger than the sum of its proper divisors (7719393305153).

131224110211231 is a wasteful number, since it uses less digits than its factorization.

131224110211231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18222161.

The product of its (nonzero) digits is 576, while the sum is 25.

Adding to 131224110211231 its reverse (132112011422131), we get a palindrome (263336121633362).

The spelling of 131224110211231 in words is "one hundred thirty-one trillion, two hundred twenty-four billion, one hundred ten million, two hundred eleven thousand, two hundred thirty-one".

Divisors: 1 17 433943 7377031 17788201 302399417 7719065306543 131224110211231