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20313007 = 1113142049
BaseRepresentation
bin100110101111…
…1001110101111
31102020000012121
41031133032233
520200004012
62003213411
7334441411
oct115371657
942200177
1020313007
1110514510
126977267
134292a40
1429aa9b1
151bb3a07
hex135f3af

20313007 has 8 divisors (see below), whose sum is σ = 23864400. Its totient is φ = 17045760.

The previous prime is 20313001. The next prime is 20313047. The reversal of 20313007 is 70031302.

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 20313007 - 219 = 19788719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70882 + ... + 71167.

It is an arithmetic number, because the mean of its divisors is an integer number (2983050).

Almost surely, 220313007 is an apocalyptic number.

20313007 is a deficient number, since it is larger than the sum of its proper divisors (3551393).

20313007 is a wasteful number, since it uses less digits than its factorization.

20313007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142073.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 20313007 is about 4506.9953405789. The cubic root of 20313007 is about 272.8504908436.

Adding to 20313007 its reverse (70031302), we get a palindrome (90344309).

The spelling of 20313007 in words is "twenty million, three hundred thirteen thousand, seven".

Divisors: 1 11 13 143 142049 1562539 1846637 20313007