Search a number
-
+
20312033101 = 1087130314341
BaseRepresentation
bin10010111010101100…
…010000011101001101
31221102120200012012021
4102322230100131031
5313044340024401
613155313210141
71316231301253
oct227254203515
957376605167
1020312033101
118683682118
123b2a560951
131bb92297c9
14da990c5d3
157dd3552a1
hex4bab1074d

20312033101 has 8 divisors (see below), whose sum is σ = 20347741184. Its totient is φ = 20276358480.

The previous prime is 20312033059. The next prime is 20312033113. The reversal of 20312033101 is 10133021302.

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 20312033101 - 217 = 20311902029 is a prime.

It is a super-2 number, since 2×203120331012 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312033501) 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, 1409191 + ... + 1423531.

It is an arithmetic number, because the mean of its divisors is an integer number (2543467648).

Almost surely, 220312033101 is an apocalyptic number.

It is an amenable number.

20312033101 is a deficient number, since it is larger than the sum of its proper divisors (35708083).

20312033101 is a wasteful number, since it uses less digits than its factorization.

20312033101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16731.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20312033101 its reverse (10133021302), we get a palindrome (30445054403).

The spelling of 20312033101 in words is "twenty billion, three hundred twelve million, thirty-three thousand, one hundred one".

Divisors: 1 1087 1303 14341 1416361 15588667 18686323 20312033101