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131201001210013 = 718743000172859
BaseRepresentation
bin11101110101001110011101…
…000100100100000010011101
3122012112200201100200010200121
4131311032131010210002131
5114144044122302210023
61143012524033554541
736430650055435240
oct3565163504440235
9565480640603617
10131201001210013
1138894039864209
121286b771a15a51
135829280411a47
14245823b66b257
151027c8c103d5d
hex77539d12409d

131201001210013 has 4 divisors (see below), whose sum is σ = 149944001382880. Its totient is φ = 112458001037148.

The previous prime is 131201001210007. The next prime is 131201001210029. The reversal of 131201001210013 is 310012100102131.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 131201001210013 - 213 = 131201001201821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201001210413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9371500086423 + ... + 9371500086436.

It is an arithmetic number, because the mean of its divisors is an integer number (37486000345720).

Almost surely, 2131201001210013 is an apocalyptic number.

It is an amenable number.

131201001210013 is a deficient number, since it is larger than the sum of its proper divisors (18743000172867).

131201001210013 is an equidigital number, since it uses as much as digits as its factorization.

131201001210013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18743000172866.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 131201001210013 its reverse (310012100102131), we get a palindrome (441213101312144).

The spelling of 131201001210013 in words is "one hundred thirty-one trillion, two hundred one billion, one million, two hundred ten thousand, thirteen".

Divisors: 1 7 18743000172859 131201001210013