Search a number
-
+
1220300213 = 111922331431
BaseRepresentation
bin100100010111100…
…0100110110110101
310011001012200012012
41020233010312311
54444344101323
6321031134005
742145244366
oct11057046665
93131180165
101220300213
11576911680
122a0814305
13165a81442
14b80d5b6d
15721ea678
hex48bc4db5

1220300213 has 48 divisors (see below), whose sum is σ = 1516879872. Its totient is φ = 970596000.

The previous prime is 1220300197. The next prime is 1220300227. The reversal of 1220300213 is 3120030221.

It is a happy number.

It is not a de Polignac number, because 1220300213 - 24 = 1220300197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220300233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2831108 + ... + 2831538.

It is an arithmetic number, because the mean of its divisors is an integer number (31601664).

Almost surely, 21220300213 is an apocalyptic number.

It is an amenable number.

1220300213 is a deficient number, since it is larger than the sum of its proper divisors (296579659).

1220300213 is a wasteful number, since it uses less digits than its factorization.

1220300213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1220300213 is about 34932.7956653916. The cubic root of 1220300213 is about 1068.6173695496.

Adding to 1220300213 its reverse (3120030221), we get a palindrome (4340330434).

The spelling of 1220300213 in words is "one billion, two hundred twenty million, three hundred thousand, two hundred thirteen".

Divisors: 1 11 19 23 31 209 253 341 361 431 437 589 713 3971 4741 4807 6479 7843 8189 8303 9913 11191 13361 13547 90079 91333 109043 123101 146971 149017 155591 188347 253859 257393 307303 1711501 2071817 2792449 2831323 3380333 3578593 4823321 5838757 39364523 53056531 64226327 110936383 1220300213