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13242131 = 711316741
BaseRepresentation
bin110010100000…
…111100010011
3220220202210022
4302200330103
511342222011
61151454055
7220361540
oct62407423
926822708
1013242131
117525011
12452732b
1329884a6
141a89bc7
1512688db
hexca0f13

13242131 has 8 divisors (see below), whose sum is σ = 15268704. Its totient is φ = 11249280.

The previous prime is 13242121. The next prime is 13242157. The reversal of 13242131 is 13124231.

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

It is not a de Polignac number, because 13242131 - 218 = 12979987 is a prime.

It is a super-2 number, since 2×132421312 = 350708066842322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13242101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7580 + ... + 9161.

It is an arithmetic number, because the mean of its divisors is an integer number (1908588).

Almost surely, 213242131 is an apocalyptic number.

13242131 is a deficient number, since it is larger than the sum of its proper divisors (2026573).

13242131 is a wasteful number, since it uses less digits than its factorization.

13242131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16861.

The product of its digits is 144, while the sum is 17.

The square root of 13242131 is about 3638.9738938333. The cubic root of 13242131 is about 236.5843212387.

Adding to 13242131 its reverse (13124231), we get a palindrome (26366362).

The spelling of 13242131 in words is "thirteen million, two hundred forty-two thousand, one hundred thirty-one".

Divisors: 1 7 113 791 16741 117187 1891733 13242131