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31320123302311 = 137599381659497
BaseRepresentation
bin1110001111100010010001…
…10100101110000110100111
311002220011201020120212221021
413013301020310232012213
513101122103031133221
6150340133243032011
76411542565331504
oct707611064560647
9132804636525837
1031320123302311
119a858760aa0a8
12361a071b0b607
13146262362335c
147a3c8b3564ab
15394a956c4041
hex1c7c48d2e1a7

31320123302311 has 8 divisors (see below), whose sum is σ = 31601406434400. Its totient is φ = 31039603490688.

The previous prime is 31320123302261. The next prime is 31320123302327. The reversal of 31320123302311 is 11320332102313.

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 31320123302311 - 27 = 31320123302183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320123342311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190747686 + ... + 190911811.

It is an arithmetic number, because the mean of its divisors is an integer number (3950175804300).

Almost surely, 231320123302311 is an apocalyptic number.

31320123302311 is a deficient number, since it is larger than the sum of its proper divisors (281283132089).

31320123302311 is a wasteful number, since it uses less digits than its factorization.

31320123302311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381660233.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31320123302311 its reverse (11320332102313), we get a palindrome (42640455404624).

The spelling of 31320123302311 in words is "thirty-one trillion, three hundred twenty billion, one hundred twenty-three million, three hundred two thousand, three hundred eleven".

Divisors: 1 137 599 82063 381659497 52287351089 228614038703 31320123302311