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1220030310231 = 3223179125926153
BaseRepresentation
bin10001110000001111011…
…110010010011101010111
311022122010000021022001100
4101300033132102131113
5124442110224411411
62332250231401143
7154100326346655
oct21601736223527
94278100238040
101220030310231
11430459338697
121785498231b3
138b082345895
144309a85ddd5
1521b08442456
hex11c0f792757

1220030310231 has 48 divisors (see below), whose sum is σ = 1850698886400. Its totient is φ = 772999979136.

The previous prime is 1220030310223. The next prime is 1220030310313. The reversal of 1220030310231 is 1320130300221.

1220030310231 is a `hidden beast` number, since 122 + 0 + 0 + 3 + 0 + 310 + 231 = 666.

It is not a de Polignac number, because 1220030310231 - 23 = 1220030310223 is a prime.

It is a super-2 number, since 2×12200303102312 (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220030310931) 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, 46636651 + ... + 46662803.

It is an arithmetic number, because the mean of its divisors is an integer number (38556226800).

Almost surely, 21220030310231 is an apocalyptic number.

1220030310231 is a deficient number, since it is larger than the sum of its proper divisors (630668576169).

1220030310231 is a wasteful number, since it uses less digits than its factorization.

1220030310231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27620 (or 27617 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1220030310231 its reverse (1320130300221), we get a palindrome (2540160610452).

The spelling of 1220030310231 in words is "one trillion, two hundred twenty billion, thirty million, three hundred ten thousand, two hundred thirty-one".

Divisors: 1 3 9 23 69 179 207 537 1259 1611 3777 4117 11331 12351 26153 28957 37053 78459 86871 225361 235377 260613 601519 676083 1804557 2028249 4681387 5183303 5413671 14044161 15549909 32926627 42132483 46649727 98779881 107671901 296339643 323015703 757312421 969047109 2271937263 5893866233 6815811789 17681598699 53044796097 135558923359 406676770077 1220030310231