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3103130021 = 47523126241
BaseRepresentation
bin1011100011110110…
…0000000110100101
322000021002100010112
42320331200012211
522323400130041
61231530502405
7136620112205
oct27075400645
98007070115
103103130021
1113526aa572
12727294a05
133a5b82914
142161b0405
15132665deb
hexb8f601a5

3103130021 has 8 divisors (see below), whose sum is σ = 3175238784. Its totient is φ = 3031274880.

The previous prime is 3103130011. The next prime is 3103130029. The reversal of 3103130021 is 1200313013.

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

It is a cyclic number.

It is not a de Polignac number, because 3103130021 - 210 = 3103128997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3103129978 and 3103130005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3103130029) 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, 38540 + ... + 87701.

It is an arithmetic number, because the mean of its divisors is an integer number (396904848).

Almost surely, 23103130021 is an apocalyptic number.

It is an amenable number.

3103130021 is a deficient number, since it is larger than the sum of its proper divisors (72108763).

3103130021 is a wasteful number, since it uses less digits than its factorization.

3103130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126811.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 3103130021 is about 55705.7449550762. The cubic root of 3103130021 is about 1458.5903108404.

Adding to 3103130021 its reverse (1200313013), we get a palindrome (4303443034).

The spelling of 3103130021 in words is "three billion, one hundred three million, one hundred thirty thousand, twenty-one".

Divisors: 1 47 523 24581 126241 5933327 66024043 3103130021