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13131203042131 = 23601949953197
BaseRepresentation
bin1011111100010101100010…
…1100010101101101010011
31201111022221010011122110021
42333011120230111231103
53210120200434322011
643532220313044311
72523461311144246
oct277053054255523
951438833148407
1013131203042131
114202a03873219
121580ab93b6697
13743361b7aca5
143357a71b325d
1517b88ce37471
hexbf158b15b53

13131203042131 has 8 divisors (see below), whose sum is σ = 13724923804704. Its totient is φ = 12539382187200.

The previous prime is 13131203042123. The next prime is 13131203042173. The reversal of 13131203042131 is 13124030213131.

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

It is a cyclic number.

It is not a de Polignac number, because 13131203042131 - 23 = 13131203042123 is a prime.

It is a super-2 number, since 2×131312030421312 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13131203042096 and 13131203042105.

It is not an unprimeable number, because it can be changed into a prime (13131233042131) 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, 474962776 + ... + 474990421.

It is an arithmetic number, because the mean of its divisors is an integer number (1715615475588).

Almost surely, 213131203042131 is an apocalyptic number.

13131203042131 is a deficient number, since it is larger than the sum of its proper divisors (593720762573).

13131203042131 is an equidigital number, since it uses as much as digits as its factorization.

13131203042131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949953821.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 13131203042131 its reverse (13124030213131), we get a palindrome (26255233255262).

The spelling of 13131203042131 in words is "thirteen trillion, one hundred thirty-one billion, two hundred three million, forty-two thousand, one hundred thirty-one".

Divisors: 1 23 601 13823 949953197 21848923531 570921871397 13131203042131