Search a number
-
+
210420530231 = 1912918578439
BaseRepresentation
bin1100001111111000001…
…0100111110000110111
3202010010120100110122112
43003332002213300313
511421420123431411
6240355454121235
721126262665422
oct3037602476067
9663116313575
10210420530231
11812699a385a
12349454b021b
1316ac51887b2
14a2820309b9
1557181edb8b
hex30fe0a7c37

210420530231 has 8 divisors (see below), whose sum is σ = 221666889600. Its totient is φ = 199191330360.

The previous prime is 210420530197. The next prime is 210420530291. The reversal of 210420530231 is 132035024012.

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 210420530231 - 26 = 210420530167 is a prime.

It is a super-2 number, since 2×2104205302312 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210420530197 and 210420530206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210420530291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4264691 + ... + 4313748.

It is an arithmetic number, because the mean of its divisors is an integer number (27708361200).

Almost surely, 2210420530231 is an apocalyptic number.

210420530231 is a deficient number, since it is larger than the sum of its proper divisors (11246359369).

210420530231 is a wasteful number, since it uses less digits than its factorization.

210420530231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8579749.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 210420530231 its reverse (132035024012), we get a palindrome (342455554243).

The spelling of 210420530231 in words is "two hundred ten billion, four hundred twenty million, five hundred thirty thousand, two hundred thirty-one".

Divisors: 1 19 1291 24529 8578439 162990341 11074764749 210420530231