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13131201330311 = 71933182547667
BaseRepresentation
bin1011111100010101100010…
…0101110011110010000111
31201111022220222221200021112
42333011120211303302013
53210120200020032221
643532220212235235
72523461260454441
oct277053045636207
951438828850245
1013131201330311
114202a02904099
121580ab890bb1b
137433616cba8c
143357a6c89491
1517b88cbea15b
hexbf158973c87

13131201330311 has 4 divisors (see below), whose sum is σ = 13131383949912. Its totient is φ = 13131018710712.

The previous prime is 13131201330281. The next prime is 13131201330337. The reversal of 13131201330311 is 11303310213131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13131201330311 - 214 = 13131201313927 is a prime.

It is a super-2 number, since 2×131312013303112 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131201330911) 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, 91201901 + ... + 91345766.

It is an arithmetic number, because the mean of its divisors is an integer number (3282845987478).

Almost surely, 213131201330311 is an apocalyptic number.

13131201330311 is a deficient number, since it is larger than the sum of its proper divisors (182619601).

13131201330311 is an equidigital number, since it uses as much as digits as its factorization.

13131201330311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182619600.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 13131201330311 its reverse (11303310213131), we get a palindrome (24434511543442).

The spelling of 13131201330311 in words is "thirteen trillion, one hundred thirty-one billion, two hundred one million, three hundred thirty thousand, three hundred eleven".

Divisors: 1 71933 182547667 13131201330311