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1200332213 = 13773311953
BaseRepresentation
bin100011110001011…
…1001110110110101
310002122122012020122
41013202321312311
54424241112323
6315035141325
741513440553
oct10742716665
93078565218
101200332213
115666133a3
12295ba4845
131618ac762
14b55b8bd3
15705a3ec8
hex478b9db5

1200332213 has 8 divisors (see below), whose sum is σ = 1210844568. Its totient is φ = 1189845504.

The previous prime is 1200332173. The next prime is 1200332219. The reversal of 1200332213 is 3122330021.

It can be written as a sum of positive squares in 4 ways, for example, as 841116004 + 359216209 = 29002^2 + 18953^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1200332213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200332191 and 1200332200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200332219) 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, 94445 + ... + 106397.

It is an arithmetic number, because the mean of its divisors is an integer number (151355571).

Almost surely, 21200332213 is an apocalyptic number.

It is an amenable number.

1200332213 is a deficient number, since it is larger than the sum of its proper divisors (10512355).

1200332213 is a wasteful number, since it uses less digits than its factorization.

1200332213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12823.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1200332213 is about 34645.8109011753. The cubic root of 1200332213 is about 1062.7566237432.

Adding to 1200332213 its reverse (3122330021), we get a palindrome (4322662234).

The spelling of 1200332213 in words is "one billion, two hundred million, three hundred thirty-two thousand, two hundred thirteen".

Divisors: 1 137 733 11953 100421 1637561 8761549 1200332213