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13131011311121 = 115869203395519
BaseRepresentation
bin1011111100010100110101…
…0000111100011000010001
31201111022102202101200221202
42333011031100330120101
53210114302343423441
643532145303400545
72523453462356564
oct277051520743021
951438382350852
1013131011311121
114202915618940
121580a65153155
1374333122a6a2
143357899444db
1517b87b1b319b
hexbf14d43c611

13131011311121 has 8 divisors (see below), whose sum is σ = 14327180428800. Its totient is φ = 11935248996240.

The previous prime is 13131011311097. The next prime is 13131011311219. The reversal of 13131011311121 is 12111311013131.

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-13131011311121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13131011311093 and 13131011311102.

It is not an unprimeable number, because it can be changed into a prime (13131011311321) 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, 101633201 + ... + 101762318.

It is an arithmetic number, because the mean of its divisors is an integer number (1790897553600).

Almost surely, 213131011311121 is an apocalyptic number.

13131011311121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13131011311121 is a deficient number, since it is larger than the sum of its proper divisors (1196169117679).

13131011311121 is a wasteful number, since it uses less digits than its factorization.

13131011311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203401399.

The product of its (nonzero) digits is 54, while the sum is 20.

Adding to 13131011311121 its reverse (12111311013131), we get a palindrome (25242322324252).

The spelling of 13131011311121 in words is "thirteen trillion, one hundred thirty-one billion, eleven million, three hundred eleven thousand, one hundred twenty-one".

Divisors: 1 11 5869 64559 203395519 2237350709 1193728301011 13131011311121