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13721723 is a prime number
BaseRepresentation
bin110100010110…
…000001111011
3221211010122222
4310112001323
512003043343
61210034255
7224430011
oct64260173
927733588
1013721723
117822374
12471898b
132ac5882
141b728b1
151310a68
hexd1607b

13721723 has 2 divisors, whose sum is σ = 13721724. Its totient is φ = 13721722.

The previous prime is 13721713. The next prime is 13721761. The reversal of 13721723 is 32712731.

13721723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13721723 - 28 = 13721467 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13721692 and 13721701.

It is not a weakly prime, because it can be changed into another prime (13721713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6860861 + 6860862.

It is an arithmetic number, because the mean of its divisors is an integer number (6860862).

Almost surely, 213721723 is an apocalyptic number.

13721723 is a deficient number, since it is larger than the sum of its proper divisors (1).

13721723 is an equidigital number, since it uses as much as digits as its factorization.

13721723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 26.

The square root of 13721723 is about 3704.2844113270. The cubic root of 13721723 is about 239.4066535049.

The spelling of 13721723 in words is "thirteen million, seven hundred twenty-one thousand, seven hundred twenty-three".