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233145355 = 5294361613
BaseRepresentation
bin11011110010110…
…00010000001011
3121020201000022011
431321120100023
5434141122410
635045040351
75530463032
oct1571302013
9536630264
10233145355
1110a671613
12660b60b7
13393c0b41
1422d6d719
151570518a
hexde5840b

233145355 has 32 divisors (see below), whose sum is σ = 301498560. Its totient is φ = 172730880.

The previous prime is 233145331. The next prime is 233145373. The reversal of 233145355 is 553541332.

It is not a de Polignac number, because 233145355 - 25 = 233145323 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380029 + ... + 380641.

It is an arithmetic number, because the mean of its divisors is an integer number (9421830).

Almost surely, 2233145355 is an apocalyptic number.

233145355 is a deficient number, since it is larger than the sum of its proper divisors (68353205).

233145355 is a wasteful number, since it uses less digits than its factorization.

233145355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751.

The product of its digits is 27000, while the sum is 31.

The square root of 233145355 is about 15269.0980414692. The cubic root of 233145355 is about 615.4728819444.

Adding to 233145355 its reverse (553541332), we get a palindrome (786686687).

The spelling of 233145355 in words is "two hundred thirty-three million, one hundred forty-five thousand, three hundred fifty-five".

Divisors: 1 5 29 43 61 145 215 305 613 1247 1769 2623 3065 6235 8845 13115 17777 26359 37393 76067 88885 131795 186965 380335 764411 1084397 1607899 3822055 5421985 8039495 46629071 233145355