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13123222232131 = 1120391513138669
BaseRepresentation
bin1011111011110111110011…
…1111111101110001000011
31201110120022220212111021201
42332331330333331301003
53210002324342412011
643524420340402031
72523056452320514
oct276757477756103
951416286774251
1013123222232131
1141aa588912580
12157b4506a6317
1374268c5c66cb
1433524b2a2a0b
1517b57247ccc1
hexbef7cffdc43

13123222232131 has 16 divisors (see below), whose sum is σ = 14324580691200. Its totient is φ = 11923254599200.

The previous prime is 13123222232129. The next prime is 13123222232137.

13123222232131 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 13123222232131 - 21 = 13123222232129 is a prime.

It is a super-2 number, since 2×131232222321312 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13123222232131.

It is not an unprimeable number, because it can be changed into a prime (13123222232137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339353865 + ... + 339392533.

It is an arithmetic number, because the mean of its divisors is an integer number (895286293200).

Almost surely, 213123222232131 is an apocalyptic number.

13123222232131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13123222232131 is a deficient number, since it is larger than the sum of its proper divisors (1201358459069).

13123222232131 is a wasteful number, since it uses less digits than its factorization.

13123222232131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55850.

The product of its digits is 5184, while the sum is 28.

It can be divided in two parts, 1312322 and 2232131, that added together give a palindrome (3544453).

The spelling of 13123222232131 in words is "thirteen trillion, one hundred twenty-three billion, two hundred twenty-two million, two hundred thirty-two thousand, one hundred thirty-one".

Divisors: 1 11 2039 15131 22429 38669 166441 425359 30852109 78846091 339373199 585100639 867307001 6436107029 1193020202921 13123222232131