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13330310231 = 71904330033
BaseRepresentation
bin11000110101000110…
…00110010001010111
31021102000022220220202
430122203012101113
5204300024411411
610042430451115
7651223524140
oct143243062127
937360286822
1013330310231
115720681417
122700363a9b
131345952a44
1490658cac7
1553044b83b
hex31a8c6457

13330310231 has 4 divisors (see below), whose sum is σ = 15234640272. Its totient is φ = 11425980192.

The previous prime is 13330310221. The next prime is 13330310251. The reversal of 13330310231 is 13201303331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13201303331 = 67911943941.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13330310231 is a prime.

It is a super-2 number, since 2×133303102312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13330310221) 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, 952165010 + ... + 952165023.

It is an arithmetic number, because the mean of its divisors is an integer number (3808660068).

Almost surely, 213330310231 is an apocalyptic number.

13330310231 is a deficient number, since it is larger than the sum of its proper divisors (1904330041).

13330310231 is an equidigital number, since it uses as much as digits as its factorization.

13330310231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904330040.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 13330310231 its reverse (13201303331), we get a palindrome (26531613562).

The spelling of 13330310231 in words is "thirteen billion, three hundred thirty million, three hundred ten thousand, two hundred thirty-one".

Divisors: 1 7 1904330033 13330310231