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31324241 = 1310123857
BaseRepresentation
bin111011101111…
…1100001010001
32011221102210002
41313133201101
531004333431
63035215345
7530152214
oct167374121
964842702
1031324241
1116755403
12a5a7555
136649970
14423577b
152b3b3cb
hex1ddf851

31324241 has 8 divisors (see below), whose sum is σ = 34069224. Its totient is φ = 28627200.

The previous prime is 31324201. The next prime is 31324259. The reversal of 31324241 is 14242313.

It can be written as a sum of positive squares in 4 ways, for example, as 1392400 + 29931841 = 1180^2 + 5471^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-31324241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31324201) 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, 10616 + ... + 13241.

It is an arithmetic number, because the mean of its divisors is an integer number (4258653).

Almost surely, 231324241 is an apocalyptic number.

It is an amenable number.

31324241 is a deficient number, since it is larger than the sum of its proper divisors (2744983).

31324241 is a wasteful number, since it uses less digits than its factorization.

31324241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23971.

The product of its digits is 576, while the sum is 20.

The square root of 31324241 is about 5596.8063214658. The cubic root of 31324241 is about 315.2294993359.

Adding to 31324241 its reverse (14242313), we get a palindrome (45566554).

The spelling of 31324241 in words is "thirty-one million, three hundred twenty-four thousand, two hundred forty-one".

Divisors: 1 13 101 1313 23857 310141 2409557 31324241