Search a number
-
+
2221002031 = 8946753437
BaseRepresentation
bin1000010001100001…
…1100110100101111
312201210012121000111
42010120130310233
514022034031111
61004215440451
7106016130403
oct20430346457
95653177014
102221002031
11a3a774776
1251b986127
132951a5bb1
14170d87103
15ceeb9a21
hex8461cd2f

2221002031 has 8 divisors (see below), whose sum is σ = 2250808560. Its totient is φ = 2191303488.

The previous prime is 2221002029. The next prime is 2221002059. The reversal of 2221002031 is 1302001222.

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 2221002031 - 21 = 2221002029 is a prime.

It is a super-2 number, since 2×22210020312 = 9865700043412249922, which 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 (2221002011) 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, 14845 + ... + 68281.

It is an arithmetic number, because the mean of its divisors is an integer number (281351070).

Almost surely, 22221002031 is an apocalyptic number.

2221002031 is a deficient number, since it is larger than the sum of its proper divisors (29806529).

2221002031 is an equidigital number, since it uses as much as digits as its factorization.

2221002031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53993.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2221002031 is about 47127.5082197224. The cubic root of 2221002031 is about 1304.7169923043.

Adding to 2221002031 its reverse (1302001222), we get a palindrome (3523003253).

The spelling of 2221002031 in words is "two billion, two hundred twenty-one million, two thousand, thirty-one".

Divisors: 1 89 467 41563 53437 4755893 24955079 2221002031