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13020203333 = 23355880701
BaseRepresentation
bin11000010000001000…
…01000100101000101
31020121101210212020002
430020010020211011
5203131133001313
65551552051045
7640436621324
oct141004104505
936541725202
1013020203333
115581624525
122634533a85
1312c6626837
148b73080bb
155130e3058
hex308108945

13020203333 has 4 divisors (see below), whose sum is σ = 13076084268. Its totient is φ = 12964322400.

The previous prime is 13020203327. The next prime is 13020203351. The reversal of 13020203333 is 33330202031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33330202031 = 74761457433.

It can be written as a sum of positive squares in 2 ways, for example, as 2346627364 + 10673575969 = 48442^2 + 103313^2 .

It is a cyclic number.

It is not a de Polignac number, because 13020203333 - 26 = 13020203269 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 (13020203303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27940118 + ... + 27940583.

It is an arithmetic number, because the mean of its divisors is an integer number (3269021067).

Almost surely, 213020203333 is an apocalyptic number.

It is an amenable number.

13020203333 is a deficient number, since it is larger than the sum of its proper divisors (55880935).

13020203333 is an equidigital number, since it uses as much as digits as its factorization.

13020203333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55880934.

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 13020203333 its reverse (33330202031), we get a palindrome (46350405364).

The spelling of 13020203333 in words is "thirteen billion, twenty million, two hundred three thousand, three hundred thirty-three".

Divisors: 1 233 55880701 13020203333