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13203023331 = 319722340141
BaseRepresentation
bin11000100101111011…
…00010010111100011
31021002010211002010010
430102331202113203
5204014433221311
610022042340003
7645116563251
oct142275422743
937063732103
1013203023331
115665842933
1226857ba603
131325477154
148d36d75d1
155241a6da6
hex312f625e3

13203023331 has 8 divisors (see below), whose sum is σ = 17693392464. Its totient is φ = 8757334880.

The previous prime is 13203023329. The next prime is 13203023357. The reversal of 13203023331 is 13332030231.

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 13203023331 - 21 = 13203023329 is a prime.

It is a super-2 number, since 2×132030233312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13203023298 and 13203023307.

It is not an unprimeable number, because it can be changed into a prime (13203023311) 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, 11169480 + ... + 11170661.

It is an arithmetic number, because the mean of its divisors is an integer number (2211674058).

Almost surely, 213203023331 is an apocalyptic number.

13203023331 is a deficient number, since it is larger than the sum of its proper divisors (4490369133).

13203023331 is a wasteful number, since it uses less digits than its factorization.

13203023331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22340341.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 13203023331 its reverse (13332030231), we get a palindrome (26535053562).

The spelling of 13203023331 in words is "thirteen billion, two hundred three million, twenty-three thousand, three hundred thirty-one".

Divisors: 1 3 197 591 22340141 67020423 4401007777 13203023331