Search a number
-
+
20101100230 = 252010110023
BaseRepresentation
bin10010101110000111…
…100111001011000110
31220212212202200200201
4102232013213023012
5312131340201410
613122340201114
71311060350521
oct225607471306
956785680621
1020101100230
118585602132
123a8b99919a
131b84615163
14d898c1bb8
157c9a8b83a
hex4ae1e72c6

20101100230 has 8 divisors (see below), whose sum is σ = 36181980432. Its totient is φ = 8040440088.

The previous prime is 20101100209. The next prime is 20101100231. The reversal of 20101100230 is 3200110102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 2010110023 = 20101100230 / (2 + 0 + 1 + 0 + 1 + 1 + 0 + 0 + 2 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101100231) 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, 1005055002 + ... + 1005055021.

It is an arithmetic number, because the mean of its divisors is an integer number (4522747554).

Almost surely, 220101100230 is an apocalyptic number.

20101100230 is a deficient number, since it is larger than the sum of its proper divisors (16080880202).

20101100230 is a wasteful number, since it uses less digits than its factorization.

20101100230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010110030.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20101100230 its reverse (3200110102), we get a palindrome (23301210332).

The spelling of 20101100230 in words is "twenty billion, one hundred one million, one hundred thousand, two hundred thirty".

Divisors: 1 2 5 10 2010110023 4020220046 10050550115 20101100230