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13613101 = 19716479
BaseRepresentation
bin110011111011…
…100000101101
3221121121122221
4303323200231
511441104401
61203435341
7223465225
oct63734055
927547587
1013613101
1177587a7
124685b51
132a882b8
141b45085
1512dd7a1
hexcfb82d

13613101 has 4 divisors (see below), whose sum is σ = 14329600. Its totient is φ = 12896604.

The previous prime is 13613099. The next prime is 13613137. The reversal of 13613101 is 10131631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10131631 = 22434517.

It is a cyclic number.

It is not a de Polignac number, because 13613101 - 21 = 13613099 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 (13613701) 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, 358221 + ... + 358258.

It is an arithmetic number, because the mean of its divisors is an integer number (3582400).

Almost surely, 213613101 is an apocalyptic number.

It is an amenable number.

13613101 is a deficient number, since it is larger than the sum of its proper divisors (716499).

13613101 is an equidigital number, since it uses as much as digits as its factorization.

13613101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716498.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 13613101 is about 3689.5936090578. The cubic root of 13613101 is about 238.7732599799.

Adding to 13613101 its reverse (10131631), we get a palindrome (23744732).

The spelling of 13613101 in words is "thirteen million, six hundred thirteen thousand, one hundred one".

Divisors: 1 19 716479 13613101