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131313101201 = 149837876373
BaseRepresentation
bin111101001001011011…
…1101110100110010001
3110112221102202200211122
41322102313232212101
54122412123214301
6140154023252025
712326026641512
oct1722267564621
9415842680748
10131313101201
1150764905537
12215485aa015
13c4c8c48aa9
1464d9a3aa09
15363829081b
hex1e92dee991

131313101201 has 4 divisors (see below), whose sum is σ = 131314127412. Its totient is φ = 131312074992.

The previous prime is 131313101189. The next prime is 131313101243. The reversal of 131313101201 is 102101313131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 102101313131 = 883911551229.

It can be written as a sum of positive squares in 2 ways, for example, as 107044134976 + 24268966225 = 327176^2 + 155785^2 .

It is a cyclic number.

It is not a de Polignac number, because 131313101201 - 226 = 131245992337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131313101201.

It is not an unprimeable number, because it can be changed into a prime (131313101291) 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, 288350 + ... + 588023.

It is an arithmetic number, because the mean of its divisors is an integer number (32828531853).

Almost surely, 2131313101201 is an apocalyptic number.

It is an amenable number.

131313101201 is a deficient number, since it is larger than the sum of its proper divisors (1026211).

131313101201 is an equidigital number, since it uses as much as digits as its factorization.

131313101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026210.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 131313101201 its reverse (102101313131), we get a palindrome (233414414332).

The spelling of 131313101201 in words is "one hundred thirty-one billion, three hundred thirteen million, one hundred one thousand, two hundred one".

Divisors: 1 149837 876373 131313101201