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13243901 = 111770823
BaseRepresentation
bin110010100001…
…010111111101
3220220212012212
4302201113331
511342301101
61151510205
7220366646
oct62412775
926825185
1013243901
117526380
124528365
132989238
141a8a6cd
1512691bb
hexca15fd

13243901 has 8 divisors (see below), whose sum is σ = 15297984. Its totient is φ = 11331520.

The previous prime is 13243897. The next prime is 13243933. The reversal of 13243901 is 10934231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13243901 - 22 = 13243897 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 (13243961) 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, 35225 + ... + 35598.

It is an arithmetic number, because the mean of its divisors is an integer number (1912248).

Almost surely, 213243901 is an apocalyptic number.

13243901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13243901 is a deficient number, since it is larger than the sum of its proper divisors (2054083).

13243901 is a wasteful number, since it uses less digits than its factorization.

13243901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70851.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 13243901 is about 3639.2170861327. The cubic root of 13243901 is about 236.5948617273.

It can be divided in two parts, 1324 and 3901, that added together give a palindrome (5225).

The spelling of 13243901 in words is "thirteen million, two hundred forty-three thousand, nine hundred one".

Divisors: 1 11 17 187 70823 779053 1203991 13243901