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1311301312213 = 23971601367123
BaseRepresentation
bin10011000101001111101…
…001100001111011010101
311122100200211202121010011
4103011033221201323111
5132441021113442323
62442223054000221
7163511161150444
oct23051751417325
94570624677104
101311301312213
11466135450342
121921801a6071
139686958bc29
1447678490d5b
152419b18220d
hex1314fa61ed5

1311301312213 has 16 divisors (see below), whose sum is σ = 1383287988096. Its totient is φ = 1240578662400.

The previous prime is 1311301312187. The next prime is 1311301312249. The reversal of 1311301312213 is 3122131031131.

It is a cyclic number.

It is not a de Polignac number, because 1311301312213 - 29 = 1311301311701 is a prime.

It is a super-2 number, since 2×13113013122132 (a number of 25 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 (1311301315213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3388270 + ... + 3755392.

It is an arithmetic number, because the mean of its divisors is an integer number (86455499256).

Almost surely, 21311301312213 is an apocalyptic number.

It is an amenable number.

1311301312213 is a deficient number, since it is larger than the sum of its proper divisors (71986675883).

1311301312213 is a wasteful number, since it uses less digits than its factorization.

1311301312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368844.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1311301312213 its reverse (3122131031131), we get a palindrome (4433432343344).

The spelling of 1311301312213 in words is "one trillion, three hundred eleven billion, three hundred one million, three hundred twelve thousand, two hundred thirteen".

Divisors: 1 23 97 1601 2231 36823 155297 367123 3571831 8443829 35610931 587763923 819051413 13518570229 57013100531 1311301312213