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3031320031 = 17612923163
BaseRepresentation
bin1011010010101110…
…0100010111011111
321211020222000100021
42310223210113133
522202004220111
61220443413011
7135055536505
oct26453442737
97736860307
103031320031
111316112673
12707224167
1339402c2bc
1420a83a675
1512b1cdd71
hexb4ae45df

3031320031 has 8 divisors (see below), whose sum is σ = 3262251024. Its totient is φ = 2806235520.

The previous prime is 3031320011. The next prime is 3031320043. The reversal of 3031320031 is 1300231303.

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 3031320031 - 25 = 3031319999 is a prime.

It is a super-2 number, since 2×30313200312 = 18377802260683681922, 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 = 3031319987 and 3031320014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3031320011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1460545 + ... + 1462618.

It is an arithmetic number, because the mean of its divisors is an integer number (407781378).

Almost surely, 23031320031 is an apocalyptic number.

3031320031 is a deficient number, since it is larger than the sum of its proper divisors (230930993).

3031320031 is a wasteful number, since it uses less digits than its factorization.

3031320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923241.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 3031320031 is about 55057.4248489702. The cubic root of 3031320031 is about 1447.2512381307.

Adding to 3031320031 its reverse (1300231303), we get a palindrome (4331551334).

The spelling of 3031320031 in words is "three billion, thirty-one million, three hundred twenty thousand, thirty-one".

Divisors: 1 17 61 1037 2923163 49693771 178312943 3031320031