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103131100291 = 834632683679
BaseRepresentation
bin110000000001100010…
…1111011010010000011
3100212012101100201101011
41200003011323102003
53142203030202131
6115213333221351
710310453613532
oct1400305732203
9325171321334
10103131100291
113a8128aa09a
1217ba2491857
1399574064cb
144dc4c32319
152a390780b1
hex180317b483

103131100291 has 8 divisors (see below), whose sum is σ = 104599111680. Its totient is φ = 101668457352.

The previous prime is 103131100271. The next prime is 103131100307. The reversal of 103131100291 is 192001131301.

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-103131100291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103131100271) 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, 1303411 + ... + 1380268.

It is an arithmetic number, because the mean of its divisors is an integer number (13074888960).

Almost surely, 2103131100291 is an apocalyptic number.

103131100291 is a deficient number, since it is larger than the sum of its proper divisors (1468011389).

103131100291 is an equidigital number, since it uses as much as digits as its factorization.

103131100291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684225.

The product of its (nonzero) digits is 162, while the sum is 22.

Adding to 103131100291 its reverse (192001131301), we get a palindrome (295132231592).

The spelling of 103131100291 in words is "one hundred three billion, one hundred thirty-one million, one hundred thousand, two hundred ninety-one".

Divisors: 1 83 463 38429 2683679 222745357 1242543377 103131100291