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3121000130 = 25312100013
BaseRepresentation
bin1011101000000110…
…1010111011000010
322001111201020022102
42322001222323002
522342434001010
61233405510402
7140225030513
oct27201527302
98044636272
103121000130
1113617a5656
12731272402
133a979b751
14218702a0a
15133ee5ba5
hexba06aec2

3121000130 has 8 divisors (see below), whose sum is σ = 5617800252. Its totient is φ = 1248400048.

The previous prime is 3121000117. The next prime is 3121000153. The reversal of 3121000130 is 310001213.

It can be written as a sum of positive squares in 2 ways, for example, as 2759505961 + 361494169 = 52531^2 + 19013^2 .

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

It is a super-2 number, since 2×31210001302 = 19481283622920033800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156049997 + ... + 156050016.

Almost surely, 23121000130 is an apocalyptic number.

3121000130 is a deficient number, since it is larger than the sum of its proper divisors (2496800122).

3121000130 is a wasteful number, since it uses less digits than its factorization.

3121000130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312100020.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 3121000130 is about 55865.9120573539. The cubic root of 3121000130 is about 1461.3848326061.

Adding to 3121000130 its reverse (310001213), we get a palindrome (3431001343).

The spelling of 3121000130 in words is "three billion, one hundred twenty-one million, one hundred thirty", and thus it is an aban number.

Divisors: 1 2 5 10 312100013 624200026 1560500065 3121000130