Search a number
-
+
2001030111 = 32222336679
BaseRepresentation
bin111011101000101…
…0100101111011111
312011110021212021100
41313101110233133
513044230430421
6530321004143
7100405322013
oct16721245737
95143255240
102001030111
119375905a3
1247a183653
1325b7481b2
1414da86543
15baa17c26
hex77454bdf

2001030111 has 6 divisors (see below), whose sum is σ = 2890376840. Its totient is φ = 1334020068.

The previous prime is 2001030091. The next prime is 2001030113. The reversal of 2001030111 is 1110301002.

It is not a de Polignac number, because 2001030111 - 26 = 2001030047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 222336679 = 2001030111 / (2 + 0 + 0 + 1 + 0 + 3 + 0 + 1 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001030093 and 2001030102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001030113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111168331 + ... + 111168348.

Almost surely, 22001030111 is an apocalyptic number.

2001030111 is a deficient number, since it is larger than the sum of its proper divisors (889346729).

2001030111 is a wasteful number, since it uses less digits than its factorization.

2001030111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222336685 (or 222336682 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 2001030111 is about 44732.8750585070. The cubic root of 2001030111 is about 1260.1373225238.

Adding to 2001030111 its reverse (1110301002), we get a palindrome (3111331113).

The spelling of 2001030111 in words is "two billion, one million, thirty thousand, one hundred eleven".

Divisors: 1 3 9 222336679 667010037 2001030111