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231120313 = 1943282889
BaseRepresentation
bin11011100011010…
…01110110111001
3121002220010110121
431301221312321
5433131322223
634533413241
75504330104
oct1561516671
9532803417
10231120313
11109509126
126549a221
1338b621a8
14229a373b
151545515d
hexdc69db9

231120313 has 8 divisors (see below), whose sum is σ = 248943200. Its totient is φ = 213863328.

The previous prime is 231120293. The next prime is 231120341. The reversal of 231120313 is 313021132.

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

It is a cyclic number.

It is not a de Polignac number, because 231120313 - 225 = 197565881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231120013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140628 + ... + 142261.

It is an arithmetic number, because the mean of its divisors is an integer number (31117900).

Almost surely, 2231120313 is an apocalyptic number.

It is an amenable number.

231120313 is a deficient number, since it is larger than the sum of its proper divisors (17822887).

231120313 is a wasteful number, since it uses less digits than its factorization.

231120313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282951.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 231120313 is about 15202.6416454510. The cubic root of 231120313 is about 613.6857500946.

Adding to 231120313 its reverse (313021132), we get a palindrome (544141445).

The spelling of 231120313 in words is "two hundred thirty-one million, one hundred twenty thousand, three hundred thirteen".

Divisors: 1 19 43 817 282889 5374891 12164227 231120313