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1214130309 = 3757815729
BaseRepresentation
bin100100001011110…
…0010100010000101
310010121121012200020
41020113202202011
54441304132214
6320251005353
742041636340
oct11027424205
93117535606
101214130309
11573388087
1229a739859
13164701002
14b736b457
15718cc4a9
hex485e2885

1214130309 has 8 divisors (see below), whose sum is σ = 1850103360. Its totient is φ = 693788736.

The previous prime is 1214130301. The next prime is 1214130341. The reversal of 1214130309 is 9030314121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1214130309 - 23 = 1214130301 is a prime.

It is a super-2 number, since 2×12141303092 = 2948224814464870962, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214130301) 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, 28907844 + ... + 28907885.

It is an arithmetic number, because the mean of its divisors is an integer number (231262920).

Almost surely, 21214130309 is an apocalyptic number.

It is an amenable number.

1214130309 is a deficient number, since it is larger than the sum of its proper divisors (635973051).

1214130309 is an equidigital number, since it uses as much as digits as its factorization.

1214130309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57815739.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1214130309 is about 34844.3727020591. The cubic root of 1214130309 is about 1066.8133299093.

The spelling of 1214130309 in words is "one billion, two hundred fourteen million, one hundred thirty thousand, three hundred nine".

Divisors: 1 3 7 21 57815729 173447187 404710103 1214130309