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3012131213 = 7131731107587
BaseRepresentation
bin1011001110001001…
…0111100110001101
321202220212010020022
42303202113212031
522132101144323
61214520231525
7134433456440
oct26342274615
97686763208
103012131213
1113062a6843
1270090b5a5
13390071180
14208083657
1512968d4c8
hexb389798d

3012131213 has 64 divisors (see below), whose sum is σ = 4096770048. Its totient is φ = 2146728960.

The previous prime is 3012131207. The next prime is 3012131231. The reversal of 3012131213 is 3121312103.

It is a cyclic number.

It is not a de Polignac number, because 3012131213 - 222 = 3007936909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 3012131191 and 3012131200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3012131233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5131106 + ... + 5131692.

It is an arithmetic number, because the mean of its divisors is an integer number (64012032).

Almost surely, 23012131213 is an apocalyptic number.

It is an amenable number.

3012131213 is a deficient number, since it is larger than the sum of its proper divisors (1084638835).

3012131213 is a wasteful number, since it uses less digits than its factorization.

3012131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 3012131213 is about 54882.8863399147. The cubic root of 3012131213 is about 1444.1909821049.

Adding to 3012131213 its reverse (3121312103), we get a palindrome (6133443316).

The spelling of 3012131213 in words is "three billion, twelve million, one hundred thirty-one thousand, two hundred thirteen".

Divisors: 1 7 13 17 31 91 107 119 217 221 403 527 587 749 1391 1547 1819 2821 3317 3689 4109 6851 7631 9737 9979 12733 18197 23219 23647 43121 47957 53417 56389 62809 69853 127379 129727 165529 236561 301847 309349 394723 439663 733057 816517 908089 1067753 1655927 1947079 2165443 4021537 5131399 5715619 7474271 13629553 13880789 25312027 28150759 33100343 97165523 177184189 231702401 430304459 3012131213