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13013451 = 3211131449
BaseRepresentation
bin110001101001…
…000111001011
3220111011002200
4301221013023
511312412301
61142531243
7215420043
oct61510713
926434080
1013013451
117389220
124436b23
132908389
141a2a723
151220c86
hexc691cb

13013451 has 12 divisors (see below), whose sum is σ = 20506200. Its totient is φ = 7886880.

The previous prime is 13013443. The next prime is 13013467. The reversal of 13013451 is 15431031.

13013451 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13013451 - 23 = 13013443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13015451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65626 + ... + 65823.

It is an arithmetic number, because the mean of its divisors is an integer number (1708850).

Almost surely, 213013451 is an apocalyptic number.

13013451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13013451 is a deficient number, since it is larger than the sum of its proper divisors (7492749).

13013451 is a wasteful number, since it uses less digits than its factorization.

13013451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131466 (or 131463 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 13013451 is about 3607.4161112907. The cubic root of 13013451 is about 235.2145377485.

Adding to 13013451 its reverse (15431031), we get a palindrome (28444482).

The spelling of 13013451 in words is "thirteen million, thirteen thousand, four hundred fifty-one".

Divisors: 1 3 9 11 33 99 131449 394347 1183041 1445939 4337817 13013451