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131230230101 = 257595094539
BaseRepresentation
bin111101000110111101…
…1100110011001010101
3110112201122211102001122
41322031323212121111
54122224414330401
6140141503133325
712324002360015
oct1721573463125
9415648742048
10131230230101
1150722053223
12215248a4245
13c4b4a21939
1464cca27c45
153630d7121b
hex1e8dee6655

131230230101 has 4 divisors (see below), whose sum is σ = 131235350400. Its totient is φ = 131225109804.

The previous prime is 131230230097. The next prime is 131230230113. The reversal of 131230230101 is 101032032131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101032032131 = 372730595463.

It is a cyclic number.

It is not a de Polignac number, because 131230230101 - 22 = 131230230097 is a prime.

It is a super-2 number, since 2×1312302301012 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131230230101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131230230181) 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, 2521511 + ... + 2573028.

It is an arithmetic number, because the mean of its divisors is an integer number (32808837600).

Almost surely, 2131230230101 is an apocalyptic number.

It is an amenable number.

131230230101 is a deficient number, since it is larger than the sum of its proper divisors (5120299).

131230230101 is an equidigital number, since it uses as much as digits as its factorization.

131230230101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120298.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 131230230101 its reverse (101032032131), we get a palindrome (232262262232).

The spelling of 131230230101 in words is "one hundred thirty-one billion, two hundred thirty million, two hundred thirty thousand, one hundred one".

Divisors: 1 25759 5094539 131230230101