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2100023 = 13611543
BaseRepresentation
bin1000000000101100110111
310221200200122
420000230313
51014200043
6113002155
723564342
oct10005467
93850618
102100023
111204862
1285335b
13586b23
143c9459
152b7368
hex200b37

2100023 has 4 divisors (see below), whose sum is σ = 2102928. Its totient is φ = 2097120.

The previous prime is 2100011. The next prime is 2100031. The reversal of 2100023 is 3200012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2100023 - 28 = 2099767 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 (2100053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590 + ... + 2132.

It is an arithmetic number, because the mean of its divisors is an integer number (525732).

22100023 is an apocalyptic number.

2100023 is a deficient number, since it is larger than the sum of its proper divisors (2905).

2100023 is a wasteful number, since it uses less digits than its factorization.

2100023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 2100023 is about 1449.1456103511. The cubic root of 2100023 is about 128.0583840101.

Adding to 2100023 its reverse (3200012), we get a palindrome (5300035).

The spelling of 2100023 in words is "two million, one hundred thousand, twenty-three".

Divisors: 1 1361 1543 2100023