Search a number
-
+
131312032123 = 3072731156619
BaseRepresentation
bin111101001001011001…
…1101001100101111011
3110112221100202101100011
41322102303221211323
54122411340011443
6140153544322351
712326014566616
oct1722263514573
9415840671304
10131312032123
11507642452a8
12215481733b7
13c4c89632bc
1464d983d17d
15363812db9d
hex1e92ce997b

131312032123 has 8 divisors (see below), whose sum is σ = 131788838720. Its totient is φ = 130835544840.

The previous prime is 131312032087. The next prime is 131312032141. The reversal of 131312032123 is 321230213131.

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

It is a cyclic number.

It is not a de Polignac number, because 131312032123 - 229 = 130775161211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131312032094 and 131312032103.

It is not an unprimeable number, because it can be changed into a prime (131312033123) 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, 760108 + ... + 916726.

It is an arithmetic number, because the mean of its divisors is an integer number (16473604840).

Almost surely, 2131312032123 is an apocalyptic number.

131312032123 is a deficient number, since it is larger than the sum of its proper divisors (476806597).

131312032123 is a wasteful number, since it uses less digits than its factorization.

131312032123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159657.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131312032123 its reverse (321230213131), we get a palindrome (452542245254).

The spelling of 131312032123 in words is "one hundred thirty-one billion, three hundred twelve million, thirty-two thousand, one hundred twenty-three".

Divisors: 1 307 2731 156619 838417 48082033 427726489 131312032123