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230311916 = 22101570079
BaseRepresentation
bin11011011101001…
…00011111101100
3121001101001112222
431232210133230
5432424440131
634504214512
75464422212
oct1556443754
9531331488
10230311916
1110900682a
126516a438
133893b253
1422832cb2
151534587b
hexdba47ec

230311916 has 12 divisors (see below), whose sum is σ = 407037120. Its totient is φ = 114015600.

The previous prime is 230311867. The next prime is 230311919. The reversal of 230311916 is 619113032.

It is not an unprimeable number, because it can be changed into a prime (230311919) 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 3 ways as a sum of consecutive naturals, for example, 284636 + ... + 285443.

It is an arithmetic number, because the mean of its divisors is an integer number (33919760).

Almost surely, 2230311916 is an apocalyptic number.

It is an amenable number.

230311916 is a deficient number, since it is larger than the sum of its proper divisors (176725204).

230311916 is a wasteful number, since it uses less digits than its factorization.

230311916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570184 (or 570182 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 230311916 is about 15176.0309699210. The cubic root of 230311916 is about 612.9694114197.

Adding to 230311916 its reverse (619113032), we get a palindrome (849424948).

The spelling of 230311916 in words is "two hundred thirty million, three hundred eleven thousand, nine hundred sixteen".

Divisors: 1 2 4 101 202 404 570079 1140158 2280316 57577979 115155958 230311916