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230511345 = 35139110557
BaseRepresentation
bin11011011110101…
…01001011110001
3121001202012010020
431233111023301
5433002330340
634512354053
75466212511
oct1557251361
9531665106
10230511345
11109132649
1265245929
13389aac5c
1422885841
15153849d0
hexdbd52f1

230511345 has 16 divisors (see below), whose sum is σ = 371474880. Its totient is φ = 122053824.

The previous prime is 230511311. The next prime is 230511353. The reversal of 230511345 is 543115032.

It is not a de Polignac number, because 230511345 - 27 = 230511217 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 53194 + ... + 57363.

It is an arithmetic number, because the mean of its divisors is an integer number (23217180).

Almost surely, 2230511345 is an apocalyptic number.

It is an amenable number.

230511345 is a deficient number, since it is larger than the sum of its proper divisors (140963535).

230511345 is a wasteful number, since it uses less digits than its factorization.

230511345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110704.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 230511345 is about 15182.6000737687. The cubic root of 230511345 is about 613.1462854780.

Adding to 230511345 its reverse (543115032), we get a palindrome (773626377).

The spelling of 230511345 in words is "two hundred thirty million, five hundred eleven thousand, three hundred forty-five".

Divisors: 1 3 5 15 139 417 695 2085 110557 331671 552785 1658355 15367423 46102269 76837115 230511345