Search a number
-
+
1230202211 = 7227774199
BaseRepresentation
bin100100101010011…
…0110010101100011
310011201211202011212
41021110312111203
510004412432321
6322023300335
742325355240
oct11124662543
93151752155
101230202211
11581465147
122a3baa6ab
13167b3a504
14b95525c7
157300455b
hex49536563

1230202211 has 8 divisors (see below), whose sum is σ = 1412140800. Its totient is φ = 1049812488.

The previous prime is 1230202147. The next prime is 1230202217. The reversal of 1230202211 is 1122020321.

It is a happy number.

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 1230202211 - 26 = 1230202147 is a prime.

It is a super-3 number, since 3×12302022113 (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1230202217) 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, 385511 + ... + 388688.

It is an arithmetic number, because the mean of its divisors is an integer number (176517600).

Almost surely, 21230202211 is an apocalyptic number.

1230202211 is a deficient number, since it is larger than the sum of its proper divisors (181938589).

1230202211 is an equidigital number, since it uses as much as digits as its factorization.

1230202211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774433.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1230202211 is about 35074.2385662184. The cubic root of 1230202211 is about 1071.4999811647.

Adding to 1230202211 its reverse (1122020321), we get a palindrome (2352222532).

The spelling of 1230202211 in words is "one billion, two hundred thirty million, two hundred two thousand, two hundred eleven".

Divisors: 1 7 227 1589 774199 5419393 175743173 1230202211