Search a number
-
+
10312202221 = 251244116831
BaseRepresentation
bin10011001101010011…
…11011011111101101
3222121200020011001121
421212221323133231
5132104410432341
64423134140541
7513355162336
oct114651733755
928550204047
1010312202221
114411a73182
121bb9651751
13c8459b309
146db7d128d
154054cc4d1
hex266a7b7ed

10312202221 has 8 divisors (see below), whose sum is σ = 10358143488. Its totient is φ = 10266300000.

The previous prime is 10312202189. The next prime is 10312202293. The reversal of 10312202221 is 12220221301.

It is a happy number.

10312202221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 10312202221 - 25 = 10312202189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10312202195 and 10312202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10312232221) 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, 604276 + ... + 621106.

It is an arithmetic number, because the mean of its divisors is an integer number (1294767936).

Almost surely, 210312202221 is an apocalyptic number.

It is an amenable number.

10312202221 is a deficient number, since it is larger than the sum of its proper divisors (45941267).

10312202221 is a wasteful number, since it uses less digits than its factorization.

10312202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19523.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 10312202221 its reverse (12220221301), we get a palindrome (22532423522).

The spelling of 10312202221 in words is "ten billion, three hundred twelve million, two hundred two thousand, two hundred twenty-one".

Divisors: 1 251 2441 16831 612691 4224581 41084471 10312202221