Search a number
-
+
3100000309 = 719199117127
BaseRepresentation
bin1011100011000110…
…0100000000110101
322000001012022222021
42320301210000311
522322100002214
61231335433141
7136551365530
oct27061440065
98001168867
103100000309
11135096212a
127262257b1
133a5328213
142159d7a17
15132248924
hexb8c64035

3100000309 has 16 divisors (see below), whose sum is σ = 3748096000. Its totient is φ = 2504622384.

The previous prime is 3100000289. The next prime is 3100000313. The reversal of 3100000309 is 9030000013.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3100000309 - 29 = 3099999797 is a prime.

It is a super-2 number, since 2×31000003092 = 19220003831600190962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3100000292 and 3100000301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3100000339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32097 + ... + 85030.

It is an arithmetic number, because the mean of its divisors is an integer number (234256000).

Almost surely, 23100000309 is an apocalyptic number.

It is an amenable number.

3100000309 is a deficient number, since it is larger than the sum of its proper divisors (648095691).

3100000309 is a wasteful number, since it uses less digits than its factorization.

3100000309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117352.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 3100000309 is about 55677.6464032021. The cubic root of 3100000309 is about 1458.0997842732.

The spelling of 3100000309 in words is "three billion, one hundred million, three hundred nine", and thus it is an aban number.

Divisors: 1 7 19 133 199 1393 3781 26467 117127 819889 2225413 15577891 23308273 163157911 442857187 3100000309