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20031103097 = 291076455399
BaseRepresentation
bin10010101001111100…
…100110000001111001
31220201000001110200022
4102221330212001321
5312010430244342
613111400020225
71306250365325
oct225174460171
956630043608
1020031103097
11854a043265
123a70461675
131b72c77a35
14d804a0985
157c38619d2
hex4a9f26079

20031103097 has 8 divisors (see below), whose sum is σ = 20915496000. Its totient is φ = 19159621264.

The previous prime is 20031103051. The next prime is 20031103109. The reversal of 20031103097 is 79030113002.

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 20031103097 - 28 = 20031102841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20031102097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3224597 + ... + 3230802.

It is an arithmetic number, because the mean of its divisors is an integer number (2614437000).

Almost surely, 220031103097 is an apocalyptic number.

It is an amenable number.

20031103097 is a deficient number, since it is larger than the sum of its proper divisors (884392903).

20031103097 is a wasteful number, since it uses less digits than its factorization.

20031103097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6455535.

The product of its (nonzero) digits is 1134, while the sum is 26.

Adding to 20031103097 its reverse (79030113002), we get a palindrome (99061216099).

The spelling of 20031103097 in words is "twenty billion, thirty-one million, one hundred three thousand, ninety-seven".

Divisors: 1 29 107 3103 6455399 187206571 690727693 20031103097