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2100131023 = 17793174933
BaseRepresentation
bin111110100101101…
…0111010011001111
312102100202201011111
41331023113103033
513300113143043
6544221032451
7103020550654
oct17513272317
95370681144
102100131023
11988518581
124a73b5727
132761356a3
1415ccc1c2b
15c459109d
hex7d2d74cf

2100131023 has 16 divisors (see below), whose sum is σ = 2259377280. Its totient is φ = 1945022976.

The previous prime is 2100131003. The next prime is 2100131029. The reversal of 2100131023 is 3201310012.

It is not a de Polignac number, because 2100131023 - 221 = 2098033871 is a prime.

It is a super-3 number, since 3×21001310233 (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100130994 and 2100131012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100131029) 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, 423265 + ... + 428197.

It is an arithmetic number, because the mean of its divisors is an integer number (141211080).

Almost surely, 22100131023 is an apocalyptic number.

2100131023 is a deficient number, since it is larger than the sum of its proper divisors (159246257).

2100131023 is a wasteful number, since it uses less digits than its factorization.

2100131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5346.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2100131023 is about 45827.1865053922. The cubic root of 2100131023 is about 1280.6057970247.

Adding to 2100131023 its reverse (3201310012), we get a palindrome (5301441035).

The spelling of 2100131023 in words is "two billion, one hundred million, one hundred thirty-one thousand, twenty-three".