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3213523013 = 7681418373
BaseRepresentation
bin1011111110001010…
…0111100001000101
322021221210212211212
42333202213201011
523040130214023
61250512541205
7142430331521
oct27742474105
98257725755
103213523013
1113a9a4a448
12758251805
133c29c4b0c
14226b08d81
1513c1bee78
hexbf8a7845

3213523013 has 4 divisors (see below), whose sum is σ = 3213949068. Its totient is φ = 3213096960.

The previous prime is 3213523009. The next prime is 3213523139. The reversal of 3213523013 is 3103253123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3103253123 = 4852763949.

It can be written as a sum of positive squares in 2 ways, for example, as 1347110209 + 1866412804 = 36703^2 + 43202^2 .

It is a cyclic number.

It is not a de Polignac number, because 3213523013 - 22 = 3213523009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3213523013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213523513) 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 3 ways as a sum of consecutive naturals, for example, 201506 + ... + 216867.

It is an arithmetic number, because the mean of its divisors is an integer number (803487267).

Almost surely, 23213523013 is an apocalyptic number.

It is an amenable number.

3213523013 is a deficient number, since it is larger than the sum of its proper divisors (426055).

3213523013 is an equidigital number, since it uses as much as digits as its factorization.

3213523013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426054.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 3213523013 is about 56687.9441592302. The cubic root of 3213523013 is about 1475.6854824754.

Adding to 3213523013 its reverse (3103253123), we get a palindrome (6316776136).

The spelling of 3213523013 in words is "three billion, two hundred thirteen million, five hundred twenty-three thousand, thirteen".

Divisors: 1 7681 418373 3213523013