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131105145101 = 732175821979
BaseRepresentation
bin111101000011001111…
…0011100000100001101
3110112101221110102200212
41322012132130010031
54122000404120401
6140121234132205
712320623226510
oct1720636340415
9415357412625
10131105145101
1150668488a97
12214aaa21065
13c494b37348
1464ba186d77
153624db3dbb
hex1e8679c10d

131105145101 has 8 divisors (see below), whose sum is σ = 149881053120. Its totient is φ = 112340887488.

The previous prime is 131105145089. The next prime is 131105145139. The reversal of 131105145101 is 101541501131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131105145101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131105145401) 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, 2888471 + ... + 2933508.

It is an arithmetic number, because the mean of its divisors is an integer number (18735131640).

Almost surely, 2131105145101 is an apocalyptic number.

It is an amenable number.

131105145101 is a deficient number, since it is larger than the sum of its proper divisors (18775908019).

131105145101 is an equidigital number, since it uses as much as digits as its factorization.

131105145101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5825203.

The product of its (nonzero) digits is 300, while the sum is 23.

Adding to 131105145101 its reverse (101541501131), we get a palindrome (232646646232).

The spelling of 131105145101 in words is "one hundred thirty-one billion, one hundred five million, one hundred forty-five thousand, one hundred one".

Divisors: 1 7 3217 22519 5821979 40753853 18729306443 131105145101