Search a number
-
+
10021430231 = 4326478377
BaseRepresentation
bin10010101010101001…
…01110001111010111
3221212102002101212122
421111110232033113
5131010441231411
64334230010155
7503224515521
oct112524561727
927772071778
1010021430231
11428292194a
121b381a695b
13c39281897
146b0d40a11
153d9be29db
hex25552e3d7

10021430231 has 12 divisors (see below), whose sum is σ = 10276990992. Its totient is φ = 9772078176.

The previous prime is 10021430197. The next prime is 10021430261. The reversal of 10021430231 is 13203412001.

It is a de Polignac number, because none of the positive numbers 2k-10021430231 is a prime.

It is a super-2 number, since 2×100214302312 (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 (10021430261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1192115 + ... + 1200491.

It is an arithmetic number, because the mean of its divisors is an integer number (856415916).

Almost surely, 210021430231 is an apocalyptic number.

10021430231 is a deficient number, since it is larger than the sum of its proper divisors (255560761).

10021430231 is an frugal number, since it uses more digits than its factorization.

10021430231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9110 (or 9067 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 10021430231 its reverse (13203412001), we get a palindrome (23224842232).

The spelling of 10021430231 in words is "ten billion, twenty-one million, four hundred thirty thousand, two hundred thirty-one".

Divisors: 1 43 647 1849 8377 27821 360211 1196303 5419919 15489073 233056517 10021430231